METHOD AND APPARATUS FOR ESTIMATING CHARGING TIME OF BATTERY

A method of estimating a charging time of a battery, includes: estimating an SOC of the battery by measuring at least one parameter of the battery; estimating an internal resistance of the battery based on the at least one parameter of the battery, the SOC of the battery, and SOC-OCV data; estimating a time length of a constant current (CC) charging section based on the SOC, the internal resistance, and the at least one parameter of the battery; and estimating a time length of a constant voltage (CV) charging section based on the SOC, the internal resistance, and the at least one parameter of the battery. The estimating of the time length of the CV charging section includes: estimating a charging current of the battery in a unit of an SOC step; and calculating the time length of the CV charging section in the unit of the SOC step.