公开(公告)号：US11237214B2

公开(公告)日：2022-02-01

申请号：US16631614

申请日：2018-07-19

Applicant: GS Yuasa International Ltd.

Inventor： Nan Ukumori ,  Katsuya Inoue

IPC: G01R31/367 ,  G01R31/382 ,  H01M10/48

Abstract: An estimation device include: an acquisition unit that acquires information relating to a part of a third characteristic that is an energy storage amount-voltage charge characteristic and/or a fourth characteristic that is an energy storage amount-voltage discharge characteristic, of an energy storage device; a storage unit that stores a plurality of energy storage amount characteristics that are at least any of first characteristics, second characteristics, third characteristics that are energy storage amount-voltage charge characteristics, fourth characteristics that are energy storage amount-voltage discharge characteristics, and pieces of V−dQ/dV in correspondence with a change in a feature value, which is changed by repeated charge-discharge, or stores as a function of the feature value; and a first estimation unit that estimates an internal state of the energy storage device on the basis of the information and the energy storage amount characteristics.

公开(公告)号：US20210384513A1

公开(公告)日：2021-12-09

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 ,  H01M50/543 ,  H01M50/538 ,  H01M4/04

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：US11196078B2

公开(公告)日：2021-12-07

申请号：US15766866

申请日：2016-09-30

Applicant: GS Yuasa International Ltd.

Inventor： Kaname Nakajima ,  Heisuke Nishikawa ,  Shuji Hitomi

IPC: H01M50/46 ,  H01M10/0561 ,  H01M10/04 ,  H01M10/0568 ,  H01M10/058 ,  H01M10/0567 ,  H01M4/58 ,  H01M10/052 ,  H01M50/409 ,  H01M50/411 ,  H01M10/0525 ,  H01M4/02

Abstract: A nonaqueous electrolyte secondary battery includes a sulfur-containing positive electrode, a negative electrode, a nonaqueous electrolyte, and a cation exchange resin layer which is disposed between the positive electrode and the negative electrode and has a first surface having a roughness factor of 3 or more.
A method for producing a nonaqueous electrolyte secondary battery includes a sulfur-containing positive electrode, a negative electrode, and a cation exchange resin layer which is interposed between the positive electrode and the negative electrode and has a first surface having a roughness factor of 3 or more.
The method includes injecting a lithium polysulfide-containing positive electrode electrolyte between the positive electrode and the cation exchange resin layer, and injecting a negative electrode electrolyte between the negative electrode and the cation exchange resin layer, the negative electrode electrolyte having a lithium polysulfide concentration lower than that of the positive electrode electrolyte.

公开(公告)号：US11189891B2

公开(公告)日：2021-11-30

申请号：US16623286

申请日：2018-07-03

Applicant: GS Yuasa International Ltd.

Inventor： Atsushi Fukushima ,  Yuki Imanaka

IPC: B60L58/10 ,  H02P27/06 ,  H01M50/572 ,  B60L50/60 ,  B60L3/04 ,  B62J99/00 ,  H01M10/42 ,  H02J7/00 ,  B62J45/00

Abstract: An energy storage apparatus includes: an external terminal connected to an energy storage device; a current cut-off device disposed on a current path connecting the energy storage device and the external terminal to each other; a voltage applying circuit that applies a voltage to the external terminal using the energy storage device or another circuit as a power source; and a control device. The control device is configured to perform: current cut-off processing for cutting off flowing of a current into the energy storage device by bringing the current cut-off device into an OPEN state; detecting processing for detecting a voltage of the external terminal to which a voltage is applied by the voltage applying circuit during a period in which the flowing of the current is cut off by the current cut-off processing; and determining processing for determining a presence or a non-presence of a short-circuiting object.

公开(公告)号：US20210328267A1

公开(公告)日：2021-10-21

申请号：US17290139

申请日：2019-10-31

Applicant: GS Yuasa International Ltd.

Inventor： Ryo HARADA

IPC: H01M10/0569 ,  H01M4/133 ,  H01M10/0525

Abstract: A nonaqueous electrolyte solution secondary battery according to one aspect of the present invention is a nonaqueous electrolyte solution secondary battery including a positive electrode and a nonaqueous electrolyte solution. The positive electrode contains a sulfur-mesoporous carbon composite that is a composite of a sulfur-based active material and mesoporous carbon. The nonaqueous electrolyte solution contains a fluorinated solvent. The fluorinated solvent contains a chain fluorinated carbonate, a chain fluorinated carboxylic acid ester, or a combination thereof.

公开(公告)号：US20210328255A1

公开(公告)日：2021-10-21

申请号：US17272955

申请日：2019-09-05

Applicant: GS Yuasa International Ltd.

Inventor： Takashi OKAJIMA

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

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：US11121399B2

公开(公告)日：2021-09-14

申请号：US16468970

申请日：2018-01-15

Applicant: Robert Bosch GmbH ,  GS Yuasa International Ltd.

Inventor： Martin Gerlach ,  Juergen Herold ,  Florian Postler ,  Christoph Schlund ,  Franz Brieger

IPC: H01M10/0525 ,  H01M50/54 ,  H01M50/103 ,  H01M50/538

Abstract: The invention relates to a battery cell (2), in particular a prismatic lithium ion cell, the battery cell (2) comprising an electrode assembly (4), a battery case (6) for housing the electrode assembly (4) and a cap assembly (S) for closing the battery case (6), the cap assembly (S) comprising a set of terminals (10) arranged thereon, wherein the electrode assembly (4) comprises first electrode plates (14), separator plates and second electrode plates (16) stacked on one another, wherein electrode tabs (12) are provided to electrically connect the electrode assembly (4) with the terminals (10). The electrode tabs (12) are bent at least once in a direction normal to the first and second electrode plates (14, 6). Furthermore, the invention relates to a method of manufacturing a battery cell (2).

公开(公告)号：US11114707B2

公开(公告)日：2021-09-07

申请号：US16460762

申请日：2019-07-02

Applicant: GS Yuasa International Ltd.

Inventor： Ryo Matsubara ,  Takeyuki Shiraishi

IPC: H01M10/44 ,  H01M10/46 ,  H01M10/48 ,  B60L58/22 ,  H02H7/18 ,  H02J7/00 ,  G06F1/3212 ,  B60L50/51

Abstract: A monitoring apparatus for an energy storage device provided at a movable body and electrically connected to a load of the movable body via a switch, the monitoring apparatus comprising: a monitoring unit supplied with power from the energy storage device; wherein the monitoring unit executes monitoring operation of bringing the switch from a closed state into an opened state under a condition that the energy storage device has voltage not more than a discharge voltage threshold, and bringing the switch from the opened state into the closed state under a condition that the switch is in the opened state and the energy storage device satisfies a predetermined discharge recovery condition, and extends an interval of the monitoring operation when the movable body is parked while the switch is in the opened state, in comparison to a case where the movable body is not parked.

公开(公告)号：US11114665B2

公开(公告)日：2021-09-07

申请号：US16328184

申请日：2017-08-28

Applicant: GS Yuasa International Ltd.

Inventor： Masashi Takano ,  Akihiko Miyazaki

IPC: H01M4/587 ,  H01G11/26 ,  H01G11/38 ,  H01G11/24 ,  H01G11/32 ,  H01G11/86 ,  H01M4/04 ,  H01M10/0525 ,  H01M4/02

Abstract: There is provided is an energy storage device having improved power performance at a relatively large current. In the present embodiment, an energy storage device is provided, which has a negative active material layer containing particulate amorphous carbon, wherein a distribution curve of differential pore volume in the negative active material layer has a peak appearing within the range from 0.1 μm to 2 μm inclusive and the differential pore volume at the peak is 0.9 cm3/g or more.

公开(公告)号：US20210270900A1

公开(公告)日：2021-09-02

申请号：US16980096

申请日：2019-03-27

Applicant: GS Yuasa International Ltd.

Inventor： Yuki IMANAKA

IPC: G01R31/327 ,  G01R31/52 ,  H01G2/16 ,  H01G2/18 ,  H01M10/42 ,  H01M50/249 ,  H01M50/284 ,  H01M50/583

Abstract: A diagnostic device diagnoses damage to a breaker that interrupts a current of an energy storage device. The damage to the breaker is diagnosed on the basis of a short-circuit current at a time of an external short circuit.