CHARGING/DISCHARGING DEVICE AND METHOD FOR CONTROLLING CHARGING AND DISCHARGING

摘要

A charging/discharging device (1) controls charging and discharging of a power storage device (2). The charging/discharging device (1) is provided with a warming determination section (31) that determines whether or not to warm the power storage device (2) based on the temperature of the power storage device (2) during the startup of the power storage device (2) and a warming control section (32) that finds the temperature of the power storage device (2), when a determination to warm the device has been made, and frequency characteristics for the resistance value of the internal resistance of the power storage device (2). The frequency characteristics correspond to the charge level, and based on these frequency characteristics, the warming control section alternately repeats alternating charging and discharging of the power storage device (2) in a predetermined charging and discharging charging period.