Method for predicting battery health in consideration of temperature of battery management system

摘要

Provided is a method for predicting battery health in consideration of a temperature of a battery management system, the method including: measuring the voltage, current, and temperature of the battery and calculating the initial state of charge (SOC) of the battery by an internal control unit when the operation of the battery management system (BMS) is started; checking whether the battery is in the charged state or in the discharged state by the control unit; calculating the current amount of accumulated discharge by the control unit if the battery is in the discharged state; calculating an accumulated discharge rate capacity by the control unit if the battery is in the charged state and if the amount of accumulated discharge is calculated; calculating the capacity reduction rate of the battery depending on the average usage temperature of the battery by the control unit; calculating a currently available battery capacity ratio by using the capacity reduction rate and the accumulated discharge rate capacity value by the control unit; and calculating and outputting the state of health (SOH) of the battery, which corresponds to the temperature change of the battery, by the control unit based on the battery capacity ratio.