Development of a 3kW fast battery charger with various charging modes and parallel operation

This paper reports that development cases of charger with various charging functions. The developed charger has functions of temperature compensation charging mode, pulse charging mode, trickle charging control, reverse connecting protection and it can recycle the battery which is the performance degradation by converting charge and discharge mode. In addition, the proposed charger structure is designed as module method consisting of control, charge, and discharge parts so it is excellent in extension and can be set with various modes by control module. This paper describes the operating characteristics of these chargers and reports performance verification based on various experiment results.