US 12,214,694 B2
Information processing apparatus, method and system
Takahiro Yamamoto, Tokyo (JP); Kaoru Koiwa, Tokyo (JP); Hisaaki Hatano, Yokohama Kanagawa (JP); Kenichi Fujiwara, Kawasaki Kanagawa (JP); Kohei Maruchi, Tokyo (JP); Koji Takazawa, Tokyo (JP); Yoshiyuki Isozaki, Tokyo (JP); Shun Egusa, Yokohama Kanagawa (JP); and Tomokazu Morita, Funabashi Chiba (JP)
Assigned to Kabushiki Kaisha Toshiba, Tokyo (JP)
Filed by KABUSHIKI KAISHA TOSHIBA, Tokyo (JP)
Filed on Feb. 26, 2021, as Appl. No. 17/249,344.
Application 17/249,344 is a continuation of application No. PCT/JP2019/035279, filed on Sep. 6, 2019.
Prior Publication US 2021/0178927 A1, Jun. 17, 2021
Int. Cl. H02J 7/00 (2006.01); B60L 50/60 (2019.01); B60L 53/62 (2019.01); B60L 53/66 (2019.01); B60L 58/12 (2019.01)
CPC B60L 58/12 (2019.02) [B60L 50/60 (2019.02); B60L 53/62 (2019.02); B60L 53/66 (2019.02); H02J 7/0048 (2020.01); H02J 7/005 (2020.01); H02J 7/007194 (2020.01)] 24 Claims
OG exemplary drawing
 
1. An information processing apparatus, comprising:
a charging controller configured to switch charging current of a rechargeable battery being charged with first current to second current and perform charging with the second current during a first duration which is one continuous period of time;
a first state estimator configured to
calculate a first voltage of the rechargeable battery during the first duration,
calculate a second voltage which is an average value between a voltage at a time before start of the first duration and a voltage at a time after end of the first duration,
calculate a feature of the rechargeable battery based on a difference between the first voltage and the second voltage, and
estimate a state of the rechargeable battery based on the feature; and
an estimation result evaluator configured to
specify, based on a plurality of pieces of first charging data in each of which a charging amount and a voltage are related with each other for a plurality of states, first charging data corresponding to the state estimated by the first state estimator, and
specify a reference charging amount that is a charging amount corresponding to an evaluation target voltage in the specified first charging data,
wherein the first state estimator specifies an evaluation target charging amount that is a charging amount of the rechargeable battery corresponding to the evaluation target voltage, and estimates the state of the rechargeable battery based on a difference between the reference charging amount and the evaluation target charging amount.