US 12,276,702 B2
Battery management system, battery management method, and method of manufacturing battery assembly
Junta Izumi, Nagoya (JP); Akihiro Watanabe, Seto (JP); Toshiki Hori, Seto (JP); and Misato Baba, Toyota (JP)
Assigned to TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota (JP)
Filed by TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota (JP)
Filed on Oct. 31, 2023, as Appl. No. 18/498,178.
Application 18/498,178 is a continuation of application No. 17/039,090, filed on Sep. 30, 2020, granted, now 11,841,400.
Claims priority of application No. 2019-200785 (JP), filed on Nov. 5, 2019.
Prior Publication US 2024/0061046 A1, Feb. 22, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. G01R 31/371 (2019.01); B60L 53/80 (2019.01); B60L 58/12 (2019.01); B60L 58/18 (2019.01); G01R 31/367 (2019.01); G01R 31/3835 (2019.01); H01M 10/42 (2006.01); H01M 10/44 (2006.01)
CPC G01R 31/371 (2019.01) [B60L 53/80 (2019.02); B60L 58/12 (2019.02); B60L 58/18 (2019.02); G01R 31/367 (2019.01); G01R 31/3835 (2019.01); H01M 10/4257 (2013.01); H01M 10/441 (2013.01); B60L 2240/70 (2013.01); H01M 2010/4271 (2013.01); H01M 2010/4278 (2013.01); H01M 2220/20 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A battery management system that manages information on a secondary battery, the battery management system comprising:
a storage that stores at least one trained model; and
an estimation device that estimates, by using the trained model, a full charge capacity of a target battery that is a prescribed secondary battery,
the trained model including an input layer that accepts input data, the trained model outputting the full charge capacity of a secondary battery when the input data is input to the input layer,
the input data representing a prescribed closed circuit voltage (CCV) waveform of the secondary battery,
the prescribed CCV waveform being any one of a CCV charging waveform and a CCV discharging waveform, the CCV charging waveform representing transition of a CCV during constant-current charging of the secondary battery, the CCV discharging waveform representing transition of a CCV during constant-current discharging of the secondary battery, and
the estimation device estimating the full charge capacity of the target battery by inputting the input data obtained for the target battery into the input layer of the trained model.