公开(公告)号：US20220404420A1

公开(公告)日：2022-12-22

申请号：US17765597

申请日：2020-10-02

Applicant: GS Yuasa International Ltd.

Inventor： Muhammad Syahid Fitri Bin Azahar ,  Yasuyuki HAMANO

IPC: G01R31/379 ,  G01R31/367 ,  G01R31/392

Abstract: An estimation device includes: a derivation unit (31) configured to derive a derivation history based on a current and a voltage of a lead-acid battery and a temperature of the lead-acid battery; a first specifying unit 31 configured to specify a specific gravity of an electrolyte solution; a second specifying unit (31) configured to specify at least one degree out of: a first degree of softening of a positive electrode material; a second degree of corrosion of a positive electrode grid; a third degree of sulfation of a negative electrode; and a fourth degree of shrinkage of a negative electrode material based on the specified specific gravity, the derived derivation history, and at least one relationship selected from the group consisting of: a first relationship between the specific gravity and a first history, and the first degree; a second relationship between the specific gravity and a second history; and the second degree; a third relationship between the specific gravity and a third history; and the third degree; and a fourth relationship between a fourth history and the fourth degree; and an estimation unit (31) configured to estimate a degree of deterioration of the lead-acid battery based on the specified at least one degree.

公开(公告)号：US20220237342A1

公开(公告)日：2022-07-28

申请号：US17618010

申请日：2020-06-09

Applicant: GS Yuasa International Ltd.

Inventor： Katsuyuki SATO ,  Muhammad Syahid Fitri Bin Azahar

IPC: G06F30/20

Abstract: A development support apparatus includes: an estimation unit that estimates behavior of an energy storage device by using an equivalent circuit model reflecting a state of charge (SOC)-operating voltage characteristic in a high change-amount region where an amount of change in an operating voltage with respect to an amount of change in the SOC is relatively higher than in other regions among SOC-operating voltage characteristics during constant current charge and discharge of the energy storage device; and an output unit that outputs a result of an estimation by the estimation unit.

公开(公告)号：US12241937B2

公开(公告)日：2025-03-04

申请号：US17765597

申请日：2020-10-02

Applicant: GS Yuasa International Ltd.

Inventor： Muhammad Syahid Fitri Bin Azahar ,  Yasuyuki Hamano

IPC: G01R31/379 ,  G01R31/367 ,  G01R31/392

Abstract: An estimation device includes: a derivation unit deriving a derivation history based on a current, a voltage and a temperature of a lead-acid battery; a first specifying unit specifying a specific gravity of an electrolyte solution; a second specifying unit specifying at least one of: a first degree of softening of a positive electrode material; a second degree of corrosion of a positive electrode grid; a third degree of sulfation of a negative electrode; and a fourth degree of shrinkage of a negative electrode material based on the specified specific gravity, the derived derivation history, and at least one of respective first-third relationships between the specific gravity, respective first-third histories and the respective first-third degrees, and a fourth relationship between a fourth history and the fourth degree; and an estimation unit configured to estimate a degree of deterioration of the battery based on the specified degree.