US 12,241,941 B2
Method of evaluating power storage device, method of manufacturing power storage device, and test system
Kensaku Miyazawa, Toyota (JP); Shinichi Hamasaki, Nagakute (JP); Yuya Ishihara, Miyoshi (JP); and Tetsuya Kaneko, Toyota (JP)
Assigned to TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota (JP)
Filed by TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota (JP)
Filed on Mar. 11, 2024, as Appl. No. 18/601,023.
Application 18/601,023 is a continuation of application No. 18/295,517, filed on Apr. 4, 2023.
Application 18/295,517 is a continuation of application No. 17/224,340, filed on Apr. 7, 2021, granted, now 11,650,260, issued on May 16, 2023.
Application 17/224,340 is a continuation of application No. 16/900,232, filed on Jun. 12, 2020, granted, now 11,002,799, issued on May 11, 2021.
Application 16/900,232 is a continuation of application No. 16/197,571, filed on Nov. 21, 2018, granted, now 10,725,119, issued on Jul. 28, 2020.
Prior Publication US 2024/0219473 A1, Jul. 4, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. G01R 31/385 (2019.01); G01R 31/3842 (2019.01); G01R 31/388 (2019.01); G01R 31/50 (2020.01); H01M 10/42 (2006.01); H01M 10/44 (2006.01); H02J 7/00 (2006.01)
CPC G01R 31/3865 (2019.01) [G01R 31/3842 (2019.01); G01R 31/385 (2019.01); G01R 31/50 (2020.01); H01M 10/4285 (2013.01); H01M 10/44 (2013.01); H02J 7/0069 (2020.01); G01R 31/388 (2019.01)] 13 Claims
OG exemplary drawing
 
1. A method of evaluating an all-solid-state battery comprising at least:
preparing a power storage device, the power storage device including at least a housing and an electrode assembly, the electrode assembly being accommodated in the housing, the electrode assembly including a positive electrode and a negative electrode, at least one positive electrode and at least one negative electrode being alternately stacked to form a stack portion in the electrode assembly;
adjusting a charge level of the all-solid-state battery to produce a first potential difference between the positive electrode and the negative electrode;
selecting the positive electrode or the negative electrode as a reference electrode;
performing an operation to insert a conductive rod-shaped member into the stack portion along a direction of stack of the positive electrode and the negative electrode while a second potential difference between the reference electrode and the rod-shaped member is measured after the charge level is adjusted;
stopping the rod-shaped member; and
evaluating the all-solid-state battery based on a state of the all-solid-state battery after the rod-shaped member is stopped,
when an electrode with which the rod-shaped member comes in contact first in the stack portion is different from the reference electrode, the operation to insert the rod-shaped member being controlled to stop the rod-shaped member when a decrease in absolute value of the second potential difference is detected at least once, and
when the electrode with which the rod-shaped member comes in contact first in the stack portion is identical to the reference electrode, the operation to insert the rod-shaped member being controlled to stop the rod-shaped member when an increase in the absolute value of the second potential difference is detected at least once.