ELECTRIC-VEHICLE CHARGING DEVICE, ELECTRIC-VEHICLE CHARGING METHOD, PROGRAM, AND RECORDING MEDIUM

A control apparatus (14) of an electric vehicle charging apparatus (1) applies control such that, when not charging a motive power storage battery (41), a storage battery (13) for supplying charging power is charged with electric power supplied from an alternating current power source (17) input via an AC-DC conversion apparatus (11) and a bidirectional DC-DC conversion apparatus (12), and when charging the motive power storage battery (41), the motive power storage battery (41) is charged with electric power from the alternating current power source (17) output via the AC-DC conversion apparatus (11) as well as electric power discharged from the storage battery (13) for supplying charging power and output via the bidirectional DC-DC conversion apparatus (12).