公开(公告)号：US20220367927A1

公开(公告)日：2022-11-17

申请号：US17765210

申请日：2020-10-02

Applicant: GS Yuasa International Ltd.

Inventor： Kazuki SEKIYA ,  Naohisa OKAMOTO ,  Yasuyuki HAMANO ,  Hidetoshi WADA

IPC: H01M10/42 ,  H01M10/48

Abstract: An estimation device includes an acquisition unit that acquires current, voltage, and temperature of a lead-acid battery, a data accumulation unit that accumulates an integrated value or a calculated value of the current, voltage, and temperature that are acquired, an identification unit that identifies specific gravity of an electrolyte solution of the lead-acid battery based on history data accumulated in the data accumulation unit, an estimation unit that estimates a freezing risk of the lead-acid battery based on identified specific gravity of an electrolyte solution, and an output unit that outputs an estimation result of the estimation unit.

公开(公告)号：US20220348109A1

公开(公告)日：2022-11-03

申请号：US17765223

申请日：2020-10-02

Applicant: GS Yuasa International Ltd.

Inventor： Naohisa OKAMOTO ,  Kazuki SEKIYA ,  Yasuyuki HAMANO ,  Hidetoshi WADA

IPC: B60L58/12 ,  G01R31/367 ,  G01R31/374 ,  G01R31/379

Abstract: An estimation device includes: an acquisition unit that acquires a voltage, a current, and a temperature of a lead-acid battery; a first deriving unit that derives a first SOC and a second SOC that are SOCs of a start point and an end point of an estimation period; a second deriving unit that derives a total amount of an overcharge amount in the estimation period; a third deriving unit that derives an actual measurement error based on a difference between the first SOC and the second SOC and the total amount of the overcharge amount; a first specification unit that specifies an estimation error based on the first SOC, the second SOC, and the temperature, and a relationship between the first SOC, the second SOC, and the temperature of the lead-acid battery, and the estimation error; a second specification unit that specifies an abnormality degree of the actual measurement error based on the derived actual measurement error and the specified estimation error; and an estimation unit that estimates generation of an internal short-circuit of the lead-acid battery based on the abnormality degree.

公开(公告)号：US20150380773A1

公开(公告)日：2015-12-31

申请号：US14767457

申请日：2013-11-22

Applicant: GS YUASA INTERNATIONAL LTD.

Inventor： Hidetoshi WADA ,  Masaaki HOSOKAWA

IPC: H01M10/06 ,  H01M2/16 ,  H01M10/08 ,  H01M4/14

CPC classification number: H01M10/06 ,  H01M2/1673 ,  H01M4/14 ,  H01M10/08 ,  H01M2220/20 ,  H01M2300/0011 ,  Y02E60/126

Abstract: A flooded lead-acid battery, including a negative electrode plate holding a negative active material, a positive electrode plate holding a positive active material, and a flowable electrolyte solution in which these plates are immersed, and allowing the electrolyte solution to have a utilization factor greater than or equal to 75%, wherein the concentration of an alkali metal ion or an alkaline earth metal ion in the electrolyte solution is allowed to be 0.07 to 0.3 mol/L, and the pore volume of the negative active material after formation is allowed to be 0.08 to 0.16 mL/g.

Abstract translation: 包含负极活性材料的负极板，保持正极活性物质的正极板和浸渍这些板的可流动的电解质溶液的浸渍铅酸蓄电池，并使电解液具有利用率 大于或等于75％，其中电解质溶液中碱金属离子或碱土金属离子的浓度为0.07-0.3mol / L，允许形成后负极活性物质的孔体积 为0.08〜0.16mL / g。