Patent ID: 8725338

Claim:
A charge system for a vehicle to charge the vehicle from outside thereof comprising: an electric power source which charges a vehicle having a battery, the electric power source being outside the vehicle; a power supply unit including a charge cable which leads electric power from the electric power source into the vehicle; and a power cable communication unit which performs power cable communication with the vehicle about the charging via the charge cable of the power supply unit, the power cable communication unit including a combining unit configured to combine a first communication signal into the charge cable for the first communication signal to be separated from the charge cable after transmission of the electric power to the vehicle via the charge cable and a separating unit configured to separate a second communication signal from the charge cable, the second communication signal having been combined into the charge cable at the vehicle and transmitted via the charge cable, whereby the charge cable is an electric power line as well as a communication line for the communication signals, the electric power line and the communication line being the same electric line to form the charge cable not isolated from each other.