A current estimation device according to an embodiment of the present disclosure is a device for estimating a charging/discharging current of a battery pack and includes: a shunt resistor connected between a first node and a second node on a charging/discharging path of the battery pack; a shunt capacitor connected between the first node and the second node; a voltage measuring unit connected between the first node and the second node to measure a voltage applied to the shunt resistor; and a current estimating unit configured to estimate the charging/discharging current of the battery pack by using the voltage measured by the voltage measuring unit.