公开(公告)号：US11258065B2

公开(公告)日：2022-02-22

申请号：US16069929

申请日：2017-01-13

Applicant: GS Yuasa International Ltd.

Inventor： Shota Ito ,  Kenta Nakai ,  Akihiko Miyazaki ,  Tomonori Kako ,  Sumio Mori

IPC: H01M4/02 ,  H01G11/06 ,  H01M4/587 ,  H01M10/0525 ,  H01M4/13 ,  H01M10/058 ,  H01G11/42 ,  H01G11/32 ,  H01G11/26 ,  H01G11/50 ,  H01G11/24

Abstract: An energy storage device includes: a positive electrode plate containing a positive composite layer including a positive active material capable of occluding and releasing a lithium ion; and a negative electrode plate containing a negative composite layer including a negative active material capable of occluding and releasing a lithium ion. A peak pore diameter Rp of the positive composite layer in a pore distribution measured by a mercury penetration method is 0.5 μm or less, and a peak pore diameter Rn of the negative composite layer in a pore distribution measured by a mercury penetration method is 0.5 μm or less. A ratio Rp/Rn of the peak pore diameter of the positive composite layer to the peak pore diameter of the negative composite layer is 0.60 or more and 1.70 or less.

公开(公告)号：US11243262B2

公开(公告)日：2022-02-08

申请号：US16981865

申请日：2019-03-14

Applicant: GS Yuasa International Ltd.

Inventor： Nan Ukumori

IPC: G01R31/392 ,  G01R31/367 ,  G01R31/382 ,  H01M10/48

Abstract: This deterioration estimation device is provided with: an SOH acquisition unit which acquires the SOH of a power storage element at a first time and the SOH at a second time after the first time; and a learning processing unit which trains a learning model on the basis of learning data which, as input data, includes time series data relating to the state of the power storage element from the first time to the second time, and the SOH at the first time and, as output data, includes the SOH at the second time.

公开(公告)号：US11239526B2

公开(公告)日：2022-02-01

申请号：US16493988

申请日：2018-03-12

Applicant: GS Yuasa International Ltd.

Inventor： Yoshihiro Masuda ,  Shinpei Ono ,  Yasuyuki Iwashima ,  Yo Hasegawa ,  Yuki Matsuda ,  Shun Sasaki ,  Minoru Watanabe

IPC: H01M50/20 ,  H01M50/209 ,  H01M50/51 ,  H01M50/505 ,  H01M50/55

Abstract: An energy storage apparatus includes an energy storage device, a first wiring electrically connected to the energy storage device, a harness plate holding the first wiring, and a first connector connected to the first wiring, the first connector being located at a central portion of the harness plate and capable of detachably attaching an external wiring.

公开(公告)号：US11239458B2

公开(公告)日：2022-02-01

申请号：US16330483

申请日：2017-09-06

Applicant: GS Yuasa International Ltd.

Inventor： Ryosuke Shimokawa ,  Tomonori Kako ,  Shota Ito ,  Kazuki Kawaguchi

IPC: H01M4/139 ,  H01M10/0525 ,  H01M4/505 ,  H01M4/525 ,  H01M4/62 ,  H01M4/13 ,  H01M4/36 ,  H01G11/86 ,  H01G11/24 ,  H01M4/02

Abstract: An energy storage device is provided that has improved power performance at low temperature. In the present embodiment, an energy storage device is provided that includes an electrode having an active material layer, the active material layer contains at least active material particles, the particles contained in the active material layer gives a volume-based particle size frequency distribution that has a first peak and a second peak appearing in a particle size larger than a particle size of the first peak, and particles having particle sizes equal to or smaller than a particle size Dx have a volume proportion of 49% or more and 62% or less in a volume of whole particles contained in the active material layer, with the particle size Dx defined as a particle size at a local minimum frequency between the first peak and the second peak in the particle size frequency distribution.

公开(公告)号：US11235682B2

公开(公告)日：2022-02-01

申请号：US15723997

申请日：2017-10-03

Applicant: GS Yuasa International Ltd.

Inventor： Takeyuki Shiraishi ,  Takeshi Nakamoto

IPC: H01M2/10 ,  H01M4/58 ,  H01M4/587 ,  H01M10/48 ,  H01M10/0525 ,  B60L58/21 ,  H02J7/00 ,  H01M10/42 ,  H01M50/20

Abstract: A power supply device for a vehicle includes: a first energy storage device having a first energy storage element; a second energy storage device having a second energy storage element; a switch which switches between a state in which the first energy storage device and the second energy storage device are connected in parallel and a state in which the first energy storage device and the second energy storage device are separated from each other; and a switch controller. Each of the first energy storage element and the second energy storage element is an energy storage element having an SOC-OCV characteristic having a flat region thereon, and the switch controller switches the switch from an off-state to an on-state when each of the first energy storage element and the second energy storage element is in the flat region of the SOC-OCV characteristic.

公开(公告)号：US20220009352A1

公开(公告)日：2022-01-13

申请号：US17291915

申请日：2019-11-12

Applicant: GS Yuasa International Ltd.

Inventor： Takeyuki SHIRAISHI ,  Satoru NARIMOTO

IPC: B60L3/00 ,  H02J7/00 ,  B60L58/12 ,  G01R31/3835 ,  G01R31/389 ,  H01M10/48 ,  H01M10/44

Abstract: A management apparatus for an energy storage device, wherein after the start of counting an elapsed time since a current of the energy storage device became equal to or smaller than a first threshold, when a predetermined condition in which the voltage of the energy storage device is possibly not stable is satisfied at a time point where the count reaches a stabilization time (predetermined value), the count of the elapsed time is changed.

公开(公告)号：US20210399347A1

公开(公告)日：2021-12-23

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 ,  H01G11/58 ,  H01G11/22 ,  H01G11/52 ,  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.

公开(公告)号：US20210384555A1

公开(公告)日：2021-12-09

申请号：US17410520

申请日：2021-08-24

Applicant: GS Yuasa International Ltd.

Inventor： Tetsuhiro KOBAYASHI ,  Yudai KAWASOE ,  Kenta NAGAMINE

IPC: H01M10/0567 ,  C07D239/26 ,  C07D239/38 ,  C07D239/52 ,  C07D239/54 ,  C07D251/24 ,  C07D251/30 ,  C07D251/38 ,  C07D251/46 ,  H01G11/06 ,  H01G11/60 ,  H01G11/62 ,  H01G11/64 ,  H01M10/0525 ,  H01M10/0568 ,  H01M10/0569

Abstract: Provided are a nonaqueous electrolyte capable of providing a nonaqueous electrolyte energy storage device with reduced direct current resistance and an increased capacity retention ratio after charge-discharge cycles, a nonaqueous electrolyte energy storage device including such a nonaqueous electrolyte, and a method for producing such a nonaqueous electrolyte energy storage device. One mode of the present invention is a nonaqueous electrolyte for an energy storage device, containing an additive represented by the following Formula (1) or Formula (2). In Formula (1), R1 to R4 are each independently a hydrogen atom or a group represented by —NRa2, —ORa, —SRa, etc., with the proviso that at least one of R1 to R4 is a group represented by —ORa, —SRa, —COORa, —CORa, —SO2Ra, or —SO3Ra. In Formula (2), R5 to R7 are each independently a hydrogen atom or a group represented by —NRb2, —ORb, or —SRb, with the proviso that at least one of R5 to R7 is a group represented by —SRb.

公开(公告)号：US11193986B2

公开(公告)日：2021-12-07

申请号：US16624173

申请日：2018-06-18

Applicant: GS Yuasa International Ltd.

Inventor： Yuki Imanaka

IPC: G01R31/327 ,  H01M10/42 ,  H01M10/44 ,  H01M10/48 ,  H02J7/00 ,  G01R31/50 ,  G01R31/54 ,  G01R31/56 ,  G01R31/52 ,  G01R31/3842

Abstract: The present invention addresses the problem of diagnosing a failure of a discharge resistor, while suppressing deterioration of discharge capacity. Disclosed is a failure diagnostic device for a discharge circuit 60 for discharging electricity from an electricity storage element 31. The discharge circuit 60 includes a resistance circuit 61 comprising a plurality of resistor blocks B connected in parallel, and each of the resistor blocks B comprises a plurality of discharge resistors Ra, Rb connected in series. During the time when electricity is being discharged from the electricity storage element 31, the failure diagnostic device diagnosis a failure of the resistance circuit 61 on the basis of a voltage or a current at a connection point P between the discharge resistors Ra, Rb.

公开(公告)号：US11145847B2

公开(公告)日：2021-10-12

申请号：US16080193

申请日：2017-02-24

Applicant: GS Yuasa International Ltd.

Inventor： Yu Kojima ,  Mikihito Hasegawa

IPC: H01M2/24 ,  H01M2/04 ,  H01M2/28 ,  H01M4/73 ,  H01M10/06 ,  H01M2/02 ,  H01M10/12

Abstract: Provided is a lead-acid battery where a positive electrode shelf and a negative electrode shelf are electrically connected to each other through a penetrating connection body including a welded portion filled in a penetration hole in a partition wall. A distance A between upper end surfaces of the positive and negative electrode shelves and a lower end portion of the penetration hole is 3-5 mm, a distance B between an upper end portion of the penetration hole and an upper end portion of the penetrating connection body is 3-5 mm, a distance C between the upper end portion of the penetrating connection body and a level of the electrolyte solution is 0 mm or more, and a height of the positive and negative electrode grid portions is 100 mm or more.