US Patent 12103409 Article transport system

A control unit selectively executes a first control of, while the unmanned transport vehicle is holding the transport body on the holding section, receiving electric power from the second electrical energy storage device via the second power transmitting unit and the first power receiving unit and at least either charging the first electrical energy storage device or supplying electric power to the travel section and a second control of, while the unmanned transport vehicle is holding the transport body on the holding section, receiving electric power from the first electrical energy storage device via the first power transmitting unit and the second power receiving unit and charging the second electrical energy storage device.