CHARGING TIME ESTIMATION DEVICE AND CHARGING TIME ESTIMATION METHOD

摘要

A charging time estimation device includes a cell temperature information acquisition unit, a cell capacity information acquisition unit, a current value information acquisition unit, a deterioration state information acquisition unit, a basic estimated value calculation unit, and a charging-required time calculation unit. The charging-required time calculation unit performs correction on a basic estimated value of a constant current charging time and a basic estimated value of a constant voltage charging time by using current value information and deterioration state information, and calculates, as a charging-required time, the sum of the basic estimated value of the constant current charging time after the correction and the basic estimated value of the constant voltage charging time after the correction.

主权项

1. A charging time estimation device for estimating the time required for charging a secondary cell that is charged from a charger, the charging time estimation device comprising:
a cell temperature information acquisition unit that acquires cell temperature information of the secondary cell; a cell capacity information acquisition unit that acquires remaining cell capacity information of the secondary cell; a current value information acquisition unit that acquires current value information of charging current supplied to the secondary cell; a deterioration state information acquisition unit that acquires deterioration state information of maximum cell capacity of the secondary cell; a basic estimated value calculation unit that calculates a basic estimated value of the constant current charging time and a basic estimated value of the constant voltage charging time of the secondary cell by using the cell temperature information and the remaining cell capacity information; and a charging-required time calculation unit that performs correction on the basic estimated value of the constant current charging time and the basic estimated value of the constant voltage charging time by using the current value information and the deterioration state information, and calculates, as a charging-required time, the sum of the basic estimated value of the constant current charging time after the correction and the basic estimated value of the constant voltage charging time after the correction.