Patent ID: 8771046

Claim:
An electric charging apparatus comprising: a charge mechanism for charging a first power supply device inside a first electric power source assembly mounted on traveling equipment and for charging a second power supply device inside a second electric power source assembly mounted on the traveling equipment; and an electric power source assembly swapping mechanism that dismounts and moves the first electric power source assembly from the traveling equipment to the charge mechanism, that moves the second electric power source assembly from the charge mechanism, to be mounted on the traveling equipment, wherein the charge mechanism comprises: a first port for accommodating the first electric power source assembly; a second port for accommodating the second electric power source assembly; charge means for charging a first power supply device inside the first electric power source assembly accommodated in the first port and a second power supply device inside the second electric power source assembly accommodated in the second port, and wherein the electric power source assembly swapping mechanism dismounts the first electric power source assembly from traveling equipment and moves the first electric power source assembly to the first port, so that the first power supply device is chargeable by the charge means, and moves, from the second port, the second electric power source assembly for which the second power supply device has been charged by the charge means, to be mounted on the traveling equipment.