Method for identifying operating mode of charging/supplying system between vehicle and exterior, and system for identifying operating mode of the system by the identifying method

An identifying method for identifying an operating mode of a charging/supplying system, the charging/supplying system having a detector and an identifying device, the identifying method comprising:

• detecting a plurality of detection values from at least one electric connection channel provided between a vehicle and a first external device or provided between the vehicle and a second external device via a connecting portion by the detector, in the charging/supplying system in which the vehicle is connected with the first external device or the second external device via the connecting portion used in common in a charging mode and a supplying mode, the charging mode being a mode in which an electric storage device installed on the vehicle is charged with electric power from the first external device to the electric storage device, the supplying mode being a mode in which electric power is supplied from the vehicle to the second external device, the charging/supplying system being configured to be operated in a selected one of the charging mode and the supplying mode;
• and
• determining whether the operating mode of the charging/supplying system is the charging mode or the supplying mode by the identifying device, based on a combination of the plurality of detection values detected by the detector and a correspondence relationship between each of the combinations of the plurality of detection values and the operating mode of the charging/supplying system, the correspondence relationship being configured to associate the plurality of detection values with either the charging mode or the supplying mode when consistent detection results cannot be obtained from the plurality of detection values.