APPARATUS AND METHOD FOR CALCULATING BATTERY RESISTANCE

A battery resistance calculation apparatus according to one embodiment of the present invention comprises: a measurement circuit connected between a chassis and either the (+) terminal or the (-) terminal of a battery pack; a voltage measurement unit for measuring a voltage from the measurement circuit; and an insulation resistance calculation unit for calculating the insulation resistance of the battery pack on the basis of the voltage measured by the voltage measurement unit, wherein the insulation resistance calculation unit can re-calculate the insulation resistance on the basis of the voltage variation of the battery pack according to time if the calculated insulation resistance is less than a preset threshold.