公开(公告)号：US12155030B2

公开(公告)日：2024-11-26

申请号：US17272955

申请日：2019-09-05

Applicant: GS Yuasa International Ltd.

Inventor： Takashi Okajima

IPC: H01M10/0525 ,  H01M4/02 ,  H01M4/36 ,  H01M4/505

Abstract: One aspect of the present invention is a nonaqueous electrolyte energy storage device including a positive electrode containing manganese-containing positive active material particles in which aluminum is present at least on a surface, and a nonaqueous electrolyte containing a salt represented by the following formula (1). Another aspect of the present invention is a method of producing a nonaqueous electrolyte energy storage device, including producing a positive electrode containing manganese-containing positive active material particles in which aluminum is present at least on a surface, and providing a nonaqueous electrolyte containing a salt represented by the following formula (1): wherein R1 is a hydrogen atom, a halogen atom, or an organic group, Mm+ is an alkali metal cation, an alkaline earth metal cation, or an onium cation. m is an integer equivalent to the number of valence of a cation represented by Mm+. when m is 2 or more, a plurality of R1s are each independently as defined above.

公开(公告)号：US20240387916A1

公开(公告)日：2024-11-21

申请号：US18702599

申请日：2022-10-04

Applicant: GS Yuasa International Ltd.

Inventor： Riku AIKATA ,  Ryoichi OKUYAMA

IPC: H01M50/209 ,  H01M50/224 ,  H01M50/271 ,  H01M50/289

Abstract: An energy storage apparatus includes an energy storage unit including a plurality of energy storage devices each having a flat shape, and an outer case that accommodates the energy storage unit. The outer case includes an outer case body in which a first opening portion opened in a predetermined direction is formed, the outer case body includes a bottom wall facing the first opening portion in the predetermined direction, and a side wall integrated with the bottom wall, and a second opening portion through which the energy storage unit can pass is formed at a position facing the side wall of the outer case body.

公开(公告)号：US20240377461A1

公开(公告)日：2024-11-14

申请号：US18691838

申请日：2022-09-07

Applicant: GS Yuasa International Ltd.

Inventor： Tomoshige INOUE

IPC: G01R31/367 ,  G01R31/3842 ,  G01R31/389 ,  H01M10/48 ,  H02J7/00 ,  H02J7/35

Abstract: A management apparatus includes an acquisition unit that acquires a current value and a voltage value of an energy storage device, and a calculation unit that calculates a current limit value along a current limit characteristic of the energy storage device based on internal resistance of the energy storage device and the acquired current value and voltage value.

公开(公告)号：US20240372165A1

公开(公告)日：2024-11-07

申请号：US18685910

申请日：2022-09-22

Applicant: GS Yuasa International Ltd.

Inventor： Naoyuki KITAMURA

IPC: H01M10/48 ,  H01G11/78 ,  H01M50/209 ,  H01M50/507 ,  H01M50/569

Abstract: An energy storage apparatus includes an energy storage device, a sensor, and a holding member that holds the sensor. The sensor includes a protruding portion protruding laterally. The holding member includes an oppositely facing surface oppositely facing the protruding portion, and a fixing portion provided on the oppositely facing surface and fixing the protruding portion in a state of penetrating the protruding portion. A gap is provided between the protruding portion and the oppositely facing surface.

公开(公告)号：US20240322268A1

公开(公告)日：2024-09-26

申请号：US18577830

申请日：2022-06-10

Applicant: GS Yuasa International Ltd.

Inventor： Masahiro TATSUMI ,  Atsushi FUKUSHIMA ,  Takashi YAMASHITA ,  Yuki IMANAKA

IPC: H01M10/42 ,  H01M50/55 ,  H01M50/569 ,  H01M50/574

CPC classification number: H01M10/4257 ,  H01M50/55 ,  H01M50/569 ,  H01M50/574 ,  H01M2010/4271

Abstract: An energy storage apparatus 50 includes: a cell 62; positive and negative external terminals 51, 52; a current interruption device 53 disposed on a first line 55P that connects the cell and one of the external terminals; a resistor 54 for current measurement that is disposed on a second line 55N that connects the cell and the other of the external terminals; a discharge circuit 120 connected to the cell 62 and the current interruption device 53 in parallel; and a control device 130. The discharge circuit 120 includes a discharge resistor 121 and a discharge switch 123. The control device 130, in a state where the current interruption device 53 is controlled to take an open state, measures currents I1, I2 by the resistor 54 with respect to a state where the discharge switch 123 is in a closed position and a state where the discharge switch 123 is in an open position, and diagnoses a failure in the current interruption device 53 based on a difference ΔI between a current value I2 measured when the discharge switch 123 is in the closed position and a current value I1 measured when the discharge switch 123 is in the open position.

公开(公告)号：US20240290985A1

公开(公告)日：2024-08-29

申请号：US18574594

申请日：2022-06-24

Applicant: GS Yuasa International Ltd.

Inventor： Miwa KOBAYASHI ,  Yasuyuki ABE

IPC: H01M4/62 ,  H01G11/06 ,  H01G11/32 ,  H01G11/62 ,  H01M4/02 ,  H01M4/58 ,  H01M4/587 ,  H01M10/0525 ,  H01M10/0568 ,  H01M10/42

CPC classification number: H01M4/625 ,  H01G11/06 ,  H01G11/32 ,  H01G11/62 ,  H01M4/5825 ,  H01M4/587 ,  H01M10/0525 ,  H01M10/0568 ,  H01M10/4235 ,  H01M2004/027 ,  H01M2004/028 ,  H01M2300/0025

Abstract: A nonaqueous electrolyte energy storage device according to one aspect of the present invention is a nonaqueous electrolyte energy storage device including: a positive electrode containing lithium iron phosphate; a negative electrode containing at least one of graphite and non-graphitic carbon and carbon black; and a nonaqueous electrolyte containing a lithium salt, in which a concentration of the lithium salt in the nonaqueous electrolyte is 0.7 mol/dm3 or less.

公开(公告)号：US20240283108A1

公开(公告)日：2024-08-22

申请号：US18649093

申请日：2024-04-29

Applicant: GS Yuasa International Ltd.

Inventor： Hironori ICHINOHASHI

IPC: H01M50/545 ,  H01M10/0525 ,  H01M50/531 ,  H01M50/533 ,  H01M50/534 ,  H01M50/536

CPC classification number: H01M50/545 ,  H01M10/0525 ,  H01M50/533 ,  H01M50/534 ,  H01M50/531 ,  H01M50/536 ,  H01M2220/20

Abstract: An energy storage device that includes a case, an electrode assembly housed in the case, the electrode assembly including an electrode assembly body portion and a tab portion protruding from a part of the electrode assembly body portion in a first direction, a current collector arranged between the electrode assembly and a wall of the case in the first direction, and an electrode terminal fixed to the wall, the current collector includes a terminal connecting portion connected to the electrode terminal and an electrode connecting portion connected to the electrode assembly, the terminal connecting portion and the electrode connecting portion are arranged side by side in a second direction intersecting with the first direction, a thickness of the electrode connecting portion is smaller than a thickness of the terminal connecting portion, and the electrode assembly includes a positive electrode plate and a negative electrode plate.

公开(公告)号：US20240266499A1

公开(公告)日：2024-08-08

申请号：US18568022

申请日：2022-03-29

Applicant: GS Yuasa International Ltd.

Inventor： Norio YAMATANI ,  Morito TANABE ,  Yuki ASADA

IPC: H01M4/133 ,  H01M4/02

CPC classification number: H01M4/133 ,  H01M2004/021 ,  H01M2004/027

Abstract: An energy storage device according to an aspect of the present invention includes an electrode assembly including a negative electrode and a positive electrode, the negative electrode includes a negative active material layer including a negative active material, the negative active material contains solid graphite, the negative active material layer has a BET specific surface area of 2.1 m2/g or less, and a pressure applied to the electrode assembly is 0.1 MPa or more.

公开(公告)号：US12044746B2

公开(公告)日：2024-07-23

申请号：US17264171

申请日：2019-06-28

Applicant: GS Yuasa International Ltd.

Inventor： Hayato Tawa ,  Daisuke Konishi ,  Kazuyuki Kawamoto ,  Jun Ikemoto

IPC: G01R31/396 ,  G01R31/3835 ,  H01M10/42 ,  H01M10/44 ,  H01M10/48 ,  H01M50/51 ,  H02J7/00

CPC classification number: G01R31/396 ,  G01R31/3835 ,  H01M10/4285 ,  H01M10/44 ,  H01M10/48 ,  H01M10/482 ,  H01M50/51 ,  H02J7/0047 ,  H01M2220/10 ,  H01M2220/20

Abstract: In an inspection apparatus for an assembled battery having a plurality of energy storage devices connected in series, based on a voltage difference between a first energy storage device with the first-lowest voltage and a second energy storage device with the second-lowest voltage during charge or discharge among the plurality of energy storage devices, an abnormality of the first energy storage device is detected.

公开(公告)号：US20240243405A1

公开(公告)日：2024-07-18

申请号：US18619247

申请日：2024-03-28

Applicant: GS Yuasa International Ltd.

Inventor： Satoru KAWAKAMI

IPC: H01M50/242 ,  H01M50/133 ,  H01M50/15 ,  H01M50/169 ,  H01M50/209

CPC classification number: H01M50/242 ,  H01M50/133 ,  H01M50/15 ,  H01M50/169 ,  H01M50/209

Abstract: An energy storage apparatus includes a pair of end members positioned in first direction and opposed to each other, and energy storage devices arrayed in the first direction between the pair of end members. Each of the energy storage devices includes an electrode assembly and a case accommodating the electrode assembly. The case has a pair of side wall portions opposed to each other. The energy storage devices include an energy storage device positioned adjacent to one of the end members such that a wall thickness of one side wall portion adjacent to the one of the end members is larger than a wall thickness of the other side wall portion in the energy storage device.