公开(公告)号：US09601811B2

公开(公告)日：2017-03-21

申请号：US14033143

申请日：2013-09-20

Applicant: GS Yuasa International Ltd.

Inventor： Suguru Kozono ,  Yasuyuki Abe ,  Kazushi Nitta ,  Takaaki Iguchi

IPC: H01M2/00 ,  H01M10/0587 ,  H01M2/14 ,  H01M10/42 ,  B60L11/18

CPC classification number: H01M10/0587 ,  B60L11/1879 ,  H01M2/14 ,  H01M2010/4292 ,  H01M2220/20 ,  Y02T10/7005 ,  Y02T10/7011 ,  Y02T10/705

Abstract: Provided is a nonaqueous electrolyte secondary cell including: a case; an element housed in the case, including at least a positive electrode member, a negative electrode member and a separator; and an electrolyte solution poured into the case, wherein when in the state of the case being installed, in the direction perpendicular to the liquid surface of the electrolyte solution, the length between the highest position and the lowest position of the element is represented by L1 and the length between the liquid surface and the lowest position of the element is represented by L2, the ratio calculated with the formula L2/L1×100 is 10% or more and 100% or less.

公开(公告)号：US10976370B2

公开(公告)日：2021-04-13

申请号：US16337615

申请日：2017-09-28

Applicant: GS YUASA INTERNATIONAL LTD.

Inventor： Kazuki Furukawa ,  Tsubasa Matsuyoshi ,  Suguru Kozono

IPC: G01R31/36 ,  G01R31/389 ,  G01R31/392 ,  H01M10/48 ,  H02J7/00 ,  B60L50/60 ,  B60K6/28

Abstract: An SOC estimation device 50 of an energy storage device includes a storage unit 73 and a data processing unit 71. The energy storage device 100 has a characteristic including a first deterioration mode in which a capacity drop with respect to time indicates a first transition, and a second deterioration mode in which a capacity drop indicates a second transition. The storage unit 73 holds first correlation data M1 indicating a correlation between SOC and OCV of the energy storage device in the first deterioration mode, and second correlation data M2 indicating a correlation between SOC and OCV of the energy storage device in the second deterioration mode. The data processing unit 71 executes a mode determination process of determining a deterioration mode of the energy storage device, and an estimation process of selecting correlation data corresponding to the deterioration mode from the storage unit, to estimate SOC of the energy storage device.