BATTERY SIMULATOR METHOD USING TWO-BRANCH EQUIVALENT CIRCUIT MODEL

Provided is a battery simulation method performed by a computing device including a processor and a memory. The battery simulation method includes selecting an equivalent circuit model of a battery including first and second branches, setting a capacity ratio of the first and second branches, receiving a current value, estimating a distribution current value distributed to each branch, updating a state of charge (SOC) value of each branch, determining an open circuit voltage value, a series resistance value, a first parallel resistance value, a second parallel resistance value, a first capacitance, and a second capacitance of each branch, based on the SOC value of each branch, determining a first voltage value of both ends of a first parallel resistor and a second voltage value of both ends of a second parallel resistor, of each branch, calculating a G parameter value and an H parameter value of the battery, and calculating an estimated voltage value of the battery