US 12,355,040 B2
Management method of secondary battery, charge method of secondary battery, management device of secondary battery, management system of secondary battery, electrode group, and unit battery
Yumi Fujita, Tokyo (JP); Tomokazu Morita, Funabashi Chiba (JP); and Nobukatsu Sugiyama, Kawasaki Kanagawa (JP)
Assigned to Kabushiki Kaisha Toshiba, Tokyo (JP)
Filed by KABUSHIKI KAISHA TOSHIBA, Tokyo (JP)
Filed on Feb. 25, 2022, as Appl. No. 17/681,211.
Claims priority of application No. 2021-116243 (JP), filed on Jul. 14, 2021.
Prior Publication US 2023/0015417 A1, Jan. 19, 2023
Int. Cl. H02J 7/00 (2006.01); H01M 4/13 (2010.01); H01M 4/505 (2010.01); H01M 4/525 (2010.01); H01M 4/58 (2010.01); H01M 10/44 (2006.01); H01M 10/48 (2006.01); H01M 4/02 (2006.01)
CPC H01M 10/44 (2013.01) [H01M 4/13 (2013.01); H01M 4/505 (2013.01); H01M 4/525 (2013.01); H01M 4/5825 (2013.01); H01M 10/48 (2013.01); H02J 7/0047 (2013.01); H02J 7/0048 (2020.01); H01M 2004/029 (2013.01); H02J 7/00712 (2020.01); H02J 7/007188 (2020.01)] 11 Claims
OG exemplary drawing
 
1. A management method of a secondary battery comprising:
setting a charge pattern in charge that is planned to be executed, based on estimation data including an estimation result of an internal state of the secondary battery, target data including a target time for charging the secondary battery in the charge that is planned to be executed, and relation data indicative a relation of each of the internal state of the secondary battery and a charge condition of the secondary battery relative to a deterioration rate of the secondary battery, the estimation result being based on a measurement result of an electric current and a voltage of the secondary battery in charge or discharge of the secondary battery, the charge pattern being set to be a charge pattern in which the deterioration rate does not exceed a threshold and the secondary battery is charged during the target time,
wherein, in the setting of the charge pattern in the charge that is planned to be executed, the management method further comprises:
calculating, based on the estimation data and the relation data, an upper-limit value of a charge current under a condition that the deterioration rate does not exceed the threshold, and a variation with time of the upper-limit value of the charge current during the target time; and
setting, as the charge pattern in the charge that is planned to be executed, a charge pattern in which the charge current does not continuously exceed the upper-limit value during the target time, based on a calculation result of the variation with time of the upper-limit value of the charge current during the target time.