Patent ID: 11921162
Assignee: KABUSHIKI KAISHA TOSHIBA
Field: Measurement (Instruments)
Classification: CPC G  H  Y | IPC G

Claim 14:
15. An information processing system, comprising:
a target rechargeable battery;
a data acquirer configured to acquire a plurality of operation data including a charge amount and voltage value of the rechargeable battery that is being recharged and discharged; and
a first state estimator configured to
select a pair of charge curve data and discharge curve data from a set of one or more first reference data and a set of one or more second reference data, based on distribution between charge amounts and voltage values in the plurality of operation data,
the one or more first reference data each including charge curve data of a rechargeable battery and including information on a state of the rechargeable battery, the charge curve data representing a relationship between a charge amount and a voltage value of the rechargeable battery,
the one or more second reference data each including discharge curve data of a rechargeable battery and including information on a state of the rechargeable battery, the discharge curve data representing a relationship between a charge amount and a voltage value of the rechargeable battery,

acquire information on states of rechargeable batteries corresponding to the charge curve data and the discharge curve data in the selected pair from the first reference data and the second reference data including the charge curve data and the discharge curve data in the selected pair,
estimate a state of the target rechargeable battery based on the acquired information.