Patents Assigned to GS Yuasa International Ltd.
  • Patent number: 12002999
    Abstract: An energy storage device includes a case, an electrode assembly housed in the case, a current collector arranged between the electrode assembly and a lid of the case in Z-axis direction, and an electrode terminal fixed to the lid. The current collector has 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 X-axis direction intersecting with the Z-axis direction, and a thickness of the electrode connecting portion is smaller than a thickness of the terminal connecting portion.
    Type: Grant
    Filed: October 23, 2019
    Date of Patent: June 4, 2024
    Assignee: GS YUASA INTERNATIONAL LTD.
    Inventor: Hironori Ichinohashi
  • Patent number: 12000904
    Abstract: An estimation device 4 is provided with: an acquisition unit 41 for acquiring time-series data about an SOC of a power storage element; a specification unit 41 for specifying a fluctuation range of the SOC in the time-series data and an SOC representative value representing an SOC region in the fluctuation range; and an estimation unit 41 for estimating a shape change of the power storage element on the basis of the specified fluctuation range and the specified representative value.
    Type: Grant
    Filed: September 30, 2020
    Date of Patent: June 4, 2024
    Assignee: GS YUASA INTERNATIONAL LTD.
    Inventors: Ryosuke Takehana, Nan Ukumori
  • Patent number: 12000899
    Abstract: A voltage measurement circuit includes: voltage dividing circuits that divide voltages of energy storage devices, in respective stages connected in series; switches that cut off the currents of the voltage dividing circuits in the respective stages, and a measurement unit that measures the voltages of the energy storage devices in the respective stages based on outputs of the voltage dividing circuits in the respective stages. The voltage dividing circuits in the respective stages each have a first resistor connected to the ground and a second resistor connected to a positive electrode of the corresponding energy storage device. The switch in a predetermined-number stage among the switches in the respective stages is an N-channel field-effect transistor (FET) having a source connected to the first resistor and a drain connected to the second resistor, and the source of the FET is a voltage output terminal with respect to the measurement unit.
    Type: Grant
    Filed: May 25, 2020
    Date of Patent: June 4, 2024
    Assignee: GS YUASA INTERNATIONAL LTD.
    Inventors: Yuki Matsuda, Masakatsu Fujimatsu
  • Patent number: 11996578
    Abstract: A vent plug (18) includes a head portion (35), a cylindrical portion (36), and a filter (34). The cylindrical portion (36) includes a cylinder portion (40), a screw thread portion (42), a slit (45), and a through hole (43). The filter (34) is disposed at a position where the through hole (43) is provided in a central axis (L) direction. The screw thread portion (42) intersects the slit (45) only at a first-peripheral screw thread portion.
    Type: Grant
    Filed: September 7, 2020
    Date of Patent: May 28, 2024
    Assignee: GS Yuasa International Ltd.
    Inventors: Tatsuya Morii, Shinsuke Oki, Yu Kojima
  • Patent number: 11996575
    Abstract: In an embodiment, a plurality of energy storage devices arranged in a first direction, an adjacent member sandwiched between the energy storage devices, a holding member that holds the energy storage devices and the adjacent member, an insulating member sandwiched between the energy storage devices and the holding member, a bus bar, and a bus bar holding member that holds the bus bar and is arranged along the plurality of energy storage devices are provided, in which the bus bar holding member has an elastic deformation portion, and the elastic deformation portion abuts on one of the adjacent member and the insulating member, and presses the bus bar holding member against the other of the adjacent member and the insulating member.
    Type: Grant
    Filed: June 21, 2019
    Date of Patent: May 28, 2024
    Assignee: GS YUASA INTERNATIONAL LTD.
    Inventor: Yoshimasa Toshioka
  • Patent number: 11987138
    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.
    Type: Grant
    Filed: November 12, 2019
    Date of Patent: May 21, 2024
    Assignee: GS YUASA INTERNATIONAL LTD.
    Inventors: Takeyuki Shiraishi, Satoru Narimoto
  • Patent number: 11984569
    Abstract: An energy storage apparatus includes an energy storage device and a spacer disposed adjacent to the energy storage device in a first direction, in which the spacer is disposed inward of the energy storage device in a second direction orthogonal to the first direction when viewed from the first direction, and has a concave-convex portion having at least one of a concave portion and a convex portion formed at an end portion in the second direction, and the concave-convex portion is disposed separated from the energy storage device.
    Type: Grant
    Filed: March 6, 2019
    Date of Patent: May 14, 2024
    Assignee: GS YUASA INTERNATIONAL LTD.
    Inventors: Shun Sasaki, Yoshimasa Toshioka
  • Patent number: 11982713
    Abstract: Provided are an information processing device, an information processing system, an information processing method, and a computer program capable of visually and easily grasping a state of an energy storage device.
    Type: Grant
    Filed: April 13, 2020
    Date of Patent: May 14, 2024
    Assignee: GS YUASA INTERNATIONAL LTD.
    Inventors: Wataru Yamamoto, Hitoshi Matsushima, Keita Nakai, Tetsuro Matsumoto
  • Patent number: 11949076
    Abstract: This maintenance assistance method detects a sign of abnormality of a power storage element on the basis of measurement data pertaining to the power storage element, which is sequentially stored in a storage device, determines at least any among a work period of a maintenance work corresponding to the detected sign of abnormality, the number of workers, and an article including a replacement or a tool required for the maintenance work, and notifies the workers of the maintenance work of execution of the maintenance work corresponding to the determined item.
    Type: Grant
    Filed: June 17, 2020
    Date of Patent: April 2, 2024
    Assignee: GS YUASA INTERNATIONAL LTD.
    Inventors: Isamu Kurisawa, Hirofumi Imaizumi
  • Patent number: 11942808
    Abstract: The energy storage apparatus includes an energy storage device, a circuit breaker connected in series with the energy storage device, a reception unit that receives a discharge instruction to discharge remaining electric power of the energy storage device, and a management unit. The management unit executes protection processing of opening, when a state of charge of the energy storage device drops below a predetermined threshold value, the circuit breaker to protect the energy storage device from overdischarging, and protection release processing of releasing protection of the energy storage device when the discharge instruction is received by the reception unit.
    Type: Grant
    Filed: May 16, 2019
    Date of Patent: March 26, 2024
    Assignee: GS YUASA INTERNATIONAL LTD.
    Inventor: Yuki Imanaka
  • Publication number: 20240097179
    Abstract: An energy storage device includes: an electrode assembly formed by winding a plurality of plates; and a case housing the electrode assembly. The electrode assembly includes: a body including a flat portion and a pair of curved portions sandwiching the flat portion; and a plurality of tabs, each tab formed by stacking a plurality of pieces of plates with the same polarity out of the plurality of plates, and protrude as a pair from each of both end faces of the body in a winding-axis direction. At least one tab of the plurality of tabs includes a bent portion continuous with the curved portion, and a pair of extended portions extended from the bent portion and continuous with the flat portion.
    Type: Application
    Filed: January 25, 2022
    Publication date: March 21, 2024
    Applicant: GS Yuasa International Ltd.
    Inventors: Kazuya OKABE, Ryoichi OKUYAMA
  • Patent number: 11936054
    Abstract: An energy storage device includes an outer case including a lid plate on which an external terminal is mounted, a plate including a tab and housed in the outer case, a conductive shaft portion penetrating the lid plate and including one end thereof connected to the external terminal, and a conductive plate portion housed in the outer case, and including a first surface to which an other end of the conductive shaft portion is connected and a second surface to which the tab is connected. A size of the conductive plate portion is set larger than a size of the external terminal in a planar direction of the lid plate.
    Type: Grant
    Filed: April 19, 2022
    Date of Patent: March 19, 2024
    Assignee: GS YUASA INTERNATIONAL LTD.
    Inventor: Yukio Enomoto
  • Patent number: 11927636
    Abstract: A diagnostic device and method 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. The damage to the breaker can also be diagnosed on a basis of a short-circuit current during a first time from detection to interruption of a short circuit, and a short-circuit current during a second time from the interruption to convergence of the short-circuit current. An energy storage apparatus can include the diagnostic device.
    Type: Grant
    Filed: March 27, 2019
    Date of Patent: March 12, 2024
    Assignee: GS YUASA INTERNATIONAL LTD.
    Inventor: Yuki Imanaka
  • Patent number: 11929621
    Abstract: A power control apparatus for a distributed power supply interconnected with a power system includes: a conversion circuit that performs reverse conversion of converting power supplied from the distributed power supply from direct current to alternating current and outputting the converted power; and a control device that controls the conversion circuit. The control device changes a target value of received power at a power reception point of the power system on the basis of a predicted value of a power generation amount of the distributed power supply and a predicted value of power consumption of a demand facility, and controls an output of the conversion circuit such that the received power at the power reception point becomes a target value.
    Type: Grant
    Filed: April 17, 2020
    Date of Patent: March 12, 2024
    Assignee: GS YUASA INTERNATIONAL LTD.
    Inventors: Hiroaki Endo, Masao Yokoyama, Shinichi Hongo
  • Patent number: 11913993
    Abstract: A detector 100, which detects an abnormality of a communication line L1 connecting a moving body controller 30 and an energy storage apparatus 50 that are mounted on a moving body 10, detects occurrence or non-occurrence of the abnormality of the communication line L1 based on at least two pieces of information from: a moving body state signal Sv transmitted from the moving body controller 30 to the energy storage apparatus 50 and stored in the energy storage apparatus 50; a communication state between the moving body controller 30 and the energy storage apparatus 50; and information on the charge and discharge of the energy storage apparatus 50.
    Type: Grant
    Filed: September 25, 2019
    Date of Patent: February 27, 2024
    Assignee: GS YUASA INTERNATIONAL LTD.
    Inventor: Takeyuki Shiraishi
  • Patent number: 11913996
    Abstract: An estimation device includes: a derivation unit (31) configured to derive a derivation history based on a current, a voltage of a lead-acid battery and a temperature of the lead-acid battery; a specifying unit (31) configured to specify one or more physical quantities based on the derivation history, and one or more relationships selected from a first relationship between a first history and an amount of positive active material, a second relationship between a second history and a specific surface area of a positive electrode material, a third relationship between a third history and bulk density of the positive active material, a fourth relationship between a fourth history and positive active material particles in a cluster size, a fifth relationship between a fifth history and a cumulative amount of lead sulfate of a negative electrode material, a sixth relationship between a sixth history and a specific surface area of the negative electrode material, a seventh relationship between a seventh history and
    Type: Grant
    Filed: October 2, 2020
    Date of Patent: February 27, 2024
    Assignee: GS Yuasa International Ltd.
    Inventors: Yasunori Mizoguchi, Yasuyuki Hamano
  • Patent number: 11909069
    Abstract: An energy storage apparatus includes one or more energy storage devices and an outer housing that houses the one or more energy storage devices. The outer housing includes an opening that allows communication between an interior and an exterior of the outer housing. The opening is sealed by a first pressure adjuster and a second pressure adjuster arranged complementary to each other. The first pressure adjuster allows passage of gas and prohibits passage of liquid. The second pressure adjuster prohibits passage of the gas and the liquid, and releases an internal pressure in the interior of the outer housing when the internal pressure exceeds a predetermined pressure.
    Type: Grant
    Filed: June 13, 2022
    Date of Patent: February 20, 2024
    Assignee: GS YUASA INTERNATIONAL LTD.
    Inventors: Toshiki Kusunoki, Osamu Ushijima
  • Publication number: 20240055700
    Abstract: An energy storage apparatus includes an energy storage unit including a first energy storage device and a second energy storage device that are arranged in a first direction. The first energy storage device includes a concave part in which a surface of the first energy device, the surface opposite to the second energy storage device is recessed. The energy storage unit further includes: a first adhesive body that is disposed in the concave part between the first energy storage device and the second energy storage device and adheres to the first energy storage device and the second energy storage device; and a spacer that is disposed between the first energy storage device and the second energy storage device at a position different from the first adhesive body in a second direction intersecting with the first direction.
    Type: Application
    Filed: December 2, 2021
    Publication date: February 15, 2024
    Applicant: GS Yuasa International Ltd.
    Inventors: Kazuya OKABE, Ryoichi OKUYAMA
  • Patent number: 11894560
    Abstract: A lead-acid battery includes a positive electrode plate, a negative electrode plate, and an electrolyte solution. The positive electrode plate includes a positive current collector and a positive electrode material. The negative electrode plate includes a negative current collector and a negative electrode material. The positive current collector contains a lead alloy containing Ca and Sn. The content of Ca in the positive current collector is 0.2% by mass or less, and the content of Sn is 0.5% by mass or more. The negative electrode material contains a first organic expander (excluding a lignin compound) containing at least one selected from the group consisting of a unit of a monocyclic aromatic compound and a unit of a bisphenol S compound.
    Type: Grant
    Filed: September 24, 2020
    Date of Patent: February 6, 2024
    Assignee: GS Yuasa International Ltd.
    Inventors: Yasunori Mizoguchi, Akihito Tsujinaka
  • Patent number: 11885852
    Abstract: A battery management device manages an energy storage device to which a shunt resistor is connected. The battery management device includes: a current measurement unit that measures a current flowing through the shunt resistor using a pair of signal wires connected to both ends of the shunt resistor; a connecting wire that connects the signal wire to a reference potential source via an opening/closing switch; and a determination unit that determines presence or absence of a failure in which connection between the pair of signal wires via the shunt resistor becomes defective based on a change in current measured by the current measurement unit when the opening/closing switch is opened and closed.
    Type: Grant
    Filed: March 24, 2020
    Date of Patent: January 30, 2024
    Assignee: GS YUASA INTERNATIONAL LTD.
    Inventor: Seiji Takai