FULL CHARGE CAPACITY CALCULATION DEVICE, COMPUTER PROGRAM, AND FULL CHARGE CAPACITY CALCULATION METHOD

摘要

PROBLEM TO BE SOLVED: To provide a full charge capacity calculation device, a computer program, and a full charge capacity calculation method with which it is possible to calculate the full charge capacity of a secondary battery with high accuracy.SOLUTION: The full charge capacity calculation device comprises: a storage unit for storing association information in which the internal resistance and discharge capacity of a secondary battery are associated; an internal resistance calculation unit for calculating internal resistance on the basis of voltages and currents before and after the charge/discharge of the secondary battery is switched; a first estimation unit for estimating the first full charge capacity of the secondary battery on the basis of the calculated internal resistance and the association information; an integrated value calculation unit for calculating the integrated value of discharge currents over an integration time at discharge time of the secondary battery; a reduced amount calculation unit for calculating the reduced amount of charge rate of the secondary battery in the integration time; a second estimation unit for estimating the second full charge capacity of the secondary battery on the basis of the calculated integrated value and reduced amount; and a full charge capacity calculation unit for calculating the full charge capacity of the secondary battery on the basis of the calculated first full charge capacity and second full charge capacity.SELECTED DRAWING: Figure 2