Technical Paper
A Novel Method of Charging Strategy Optimization Using Evolutionary Algorithm in Battery Electric Vehicles
2020-04-14
2020-01-1186
Electric vehicles (EV’s) are gaining increasing popularity because of fast depleting fossil fuels and increasing environmental hazards caused by vehicles that use fossil fuels as a source of propulsion. One of the key factors in EV development is battery management and time required to fully charge the battery. Constant-Current (CC) and Constant-Voltage (CV) are the most common charging strategies used for the charging of batteries. High charging current can cause the temperature of the battery to rise and shorten the battery life. At low State of Charge (SoC) levels, the open circuit voltage (OCV) of the battery is low and CV strategy may cause high charging current, adversely affecting the battery life. Therefore, CCCV is the most commonly used charging strategy, in which battery is charged by CC at low SOC levels and after the OCV reaches a limit, the CV method is applied for charging.