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    ESTIMATION DEVICE, ESTIMATION METHOD, AND COMPUTER PROGRAM
    1.
    发明申请
    ESTIMATION DEVICE, ESTIMATION METHOD, AND COMPUTER PROGRAM 有权

    公开(公告)号：US20220349941A1

    公开(公告)日：2022-11-03

    申请号：US17765249

    申请日：2020-10-02

    Applicant: GS Yuasa International Ltd.

    Inventor： Yasunori MIZOGUCHI ,  Yasuyuki HAMANO

    IPC: G01R31/367 ,  G01R31/392 ,  G01R31/3842 ,  G01R31/374 ,  H02J7/00 ,  H01M10/48 ,  H01M10/42

    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 a corrosion amount of a positive electrode grid, an eighth relationship between an eighth history and resistivity of a positive electrode plate, and a ninth relationship between a ninth history and resistivity of a negative electrode plate; and an estimation unit (31) configured to estimate a degree of deterioration of the lead-acid battery.

    LEAD-ACID BATTERY
    2.
    发明申请
    LEAD-ACID BATTERY 有权

    公开(公告)号：US20220328844A1

    公开(公告)日：2022-10-13

    申请号：US17608870

    申请日：2020-05-29

    Applicant: GS Yuasa International Ltd.

    Inventor： Yasunori MIZOGUCHI ,  Hiroki KAGOHASHI

    IPC: H01M4/68 ,  H01M4/14 ,  H01M10/06

    Abstract: A lead-acid battery includes a positive electrode plate, a negative electrode plate, an electrolyte solution, and a polymer compound, in which 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 Ca content of the positive current collector is 0.13% by mass or less, and the polymer compound has a peak in a range of 3.2 ppm or more and 3.8 ppm or less in a chemical shift of 1H-NMR spectrum, or the polymer compound contains a repeating structure of oxy C2-4 alkylene units.

    LEAD-ACID BATTERY
    5.
    发明申请
    LEAD-ACID BATTERY 有权

    公开(公告)号：US20220344668A1

    公开(公告)日：2022-10-27

    申请号：US17763540

    申请日：2020-09-24

    Applicant: GS Yuasa International Ltd.

    Inventor： Yasunori MIZOGUCHI ,  Akihito TSUJINAKA

    IPC: H01M4/66 ,  C22C11/06 ,  H01M10/06

    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.

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