Apparatus and method for flexible dc fast charging of an electrified vehicle

An electrified vehicle, comprising:

• a charge receptacle configured to receive a charge port to electrically charge the electrified vehicle;
• a vehicle charging controller programmed to establish a wireless communication with a charging station, wherein the vehicle charging controller is programmed to wirelessly receive a wireless signal from the charging station, the wireless signal is indicative of a charging voltage of the charging station;
• a reconfigurable energy storage system selectively and electrically connected to the charge receptacle, wherein the reconfigurable energy storage system includes:
• a first rechargeable energy storage device selectively and electrically connected to the charge receptacle;
• a second rechargeable energy storage device selectively and electrically connected to the charge receptacle;
• a plurality of low-loss switching devices selectively connected to the first rechargeable energy storage device and the second rechargeable energy storage device, wherein each of the plurality of low-loss switching devices is in communication with the vehicle charging controller;
• wherein the vehicle charging controller is programmed to selectively actuate the plurality of low-loss switching devices based on the charging voltage of the charging station such that a nominal voltage of the reconfigurable energy storage system matches the charging voltage of the charging station;
• a direct current (DC) wiring electrically connecting the charge receptacle and the reconfigurable energy storage system;
• a power electronics bay electrically connected to the charge receptacle and the reconfigurable energy storage system;
• and
• an alternating current (AC) wiring electrically connecting the power electronics bay to the charge receptacle.

A method for flexible DC fast charging of an electrified vehicle, comprising:

• providing the electrified vehicle, wherein the electrified vehicle includes a vehicle charging controller, a charge receptacle, a reconfigurable energy storage system in communication with the vehicle charging controller, the reconfigurable energy storage system is electrically connected to the charge receptacle, the reconfigurable energy storage system includes a first rechargeable energy storage device selectively and electrically connected to the charge receptacle;
• a second rechargeable energy storage device selectively and electrically connected to the charge receptacle;
• and a plurality of low-loss switching devices selectively connected to the first rechargeable energy storage device and the second rechargeable energy storage device;
• and
• commanding, via the vehicle charging controller, the plurality of low-loss switching devices to selectively actuate based on a voltage of a charging station such that a nominal voltage of the reconfigurable energy storage system matches a charging voltage of the charging station after the charge receptacle is electrically connected to a charge port of the charging station.