The invention provides a power supply device that enables a cooling mechanism specially for a power receiving unit to be avoided and also a transport apparatus. The power supply device (10) includes:a battery housing (50) which stores battery modules (21-24) and a connection box (27); a power receiving unit (30) which receives AC power in a noncontact manner from a power transmitting unit (T); arectifier (40) which converts the AC power received from the power receiving unit into DC power and outputs the DC power; an AC lead wire (41) which connects the power receiving unit with the input side of the rectifier; and a DC lead wire (42) which connects the output side of the rectifier with the connection box (27). The power receiving unit (30) is connected to the battery housing (50) via aheat dissipation piece (33), an opening (51a) is provided on a surface facing the power receiving unit (30) in the battery housing, any one of the AC lead wire (41), the DC lead wire (42) and the rectifier is disposed to pass through the opening (51a), and the battery housing (50) has a heat capacity larger than that of the power receiving unit.