Power supply system, vehicle equipped with the same, and control method of power supply system

摘要

A power conversion unit including a bidirectional converter (32), a sub DC-DC converter (36), and a main DC-DC converter (22) selectively performs first power conversion converting power supplied from outside of a vehicle into charging power for a power storage unit (12, 40), and second power conversion converting power stored in the power storage unit into output power to the outside of the vehicle. When charging of the power storage unit from the outside of the vehicle is performed in an emergency where power or a power amount to be output to the outside of the vehicle when the second power conversion is performed is requested to be greater than usual, the power conversion unit performs the first power conversion such that a state quantity indicating a state of charge of the power storage unit becomes greater than usual.