Battery control device and battery control method

Abstract

An object is to determine available input/output power of a battery with high accuracy. A battery control device includes: a correction factor calculation unit that determines a correction factor based on a deviation between a state of a secondary battery determined from a measured value related to the secondary battery and a state of the secondary battery calculated using a model related to the secondary battery; and a power limit value calculation unit that employs correction based on the correction factor to calculate a value related to available input/output power of the secondary battery. A ratio between voltage change in internal resistance based on an actual measured voltage obtained by measuring voltage of the secondary battery, and a voltage change in internal resistance based on a model voltage determined using a voltage equivalent circuit model of the secondary battery can be determined as the correction factor.

Dependencies are inferred from the claim text.