Effect of Various Charging Methods on Off-Board and On-Board Chargers of Electric Vehicles

The batteries are the primary power source for electric vehicle applications. These batteries need to be charged for electric vehicle operation. The charging can be done by using either an off-board or an on-board charger. These chargers can operate based on various charging patterns. The charging patterns have a significant influence on both the performance and lifespan of the batteries. Hence, an optimal charging strategy for achieving shorter charging time and longer cycle life is required. Therefore, this paper analyzes the effect of different charging methods on battery life for both off-board and on-board chargers. The charging patterns used in this paper are constant current constant voltage charging, pulse current charging, pulse and burp current charging, constant power constant voltage charging, and multi-step constant current charging. The result shows that the pulse and burp current charging method has less effect on the battery life cycle than other charging methods. Also, the result shows improvement in battery life concerning different charging patterns and time required for off-board and on-board chargers for various charging patterns. This is important for the selection of types of chargers and charging methods for electrical vehicle applications.