Apparatus and method for charging an electric vehicle

An energy storage and management system (ESMS) (100) includes energy storage devices (116, 124, 128) coupled to a power device (126), a power electronic conversion system that includes a plurality of DC electrical converters (104, 106, 108), each DC electrical converter (104, 106, 108) configured to step up and to step down a DC voltage, wherein energy ports (102) of the ESMS (100) are coupleable to each of the energy storage devices (116, 124, 128), and each of the energy ports (102) is coupleable to an electrical charging system (126). The ESMS (100) includes a controller (46) configured to determine a first condition of a first energy storage device (116) and a second condition of a second energy storage device (124) (414), wherein the first and second energy storage devices (116, 124) are each connected to respective energy ports (114, 120) of the power conversion system, determine a power split factor based on the first condition and on the second condition (416), and regulate power to the first and second energy storage devices based on the power split factor (418).