Charging communication system and charging equipment

摘要

In a charging communication system in which a charging control device performs communication between an electric vehicle and a charging equipment, the electric vehicle is equipped with a first communication device and a second communication device both configured to communicate with the charging equipment by using the same signal line in the charging cable; and a signal line connection device configured to switch connection/disconnection between the second communication device and the signal line. The charging control device, which controls a battery on the electric vehicle, calculates an amount of change in a signal line voltage between before and after the signal line connection device connects the second communication device to the signal line, and the charging control device causes, when the amount of change does not fall within a predetermined allowable range, the signal line connection device to disconnect the second communication device from the signal line.

主权项

1. A charging equipment capable of charging a battery on an electrically powered vehicle, the charging equipment comprising:
a charging cable configured to be connected, when charging said battery, between said electrically powered vehicle and said charging equipment; a first communication unit configured to communicate with said electrically powered vehicle by a first communication method by using a signal line in said charging cable; a second communication unit configured to communicate with said electrically powered vehicle by a second communication method by using said signal line; a signal line connector configured to switch connection and disconnection between said second communication unit and said signal line; and a signal line voltage calculator configured to calculate an amount of change in a signal line voltage which is a voltage on said signal line between before and after said signal line connector connects said second communication unit to said signal line, wherein said signal line connector disconnects, when said amount of change in said signal voltage does not fall within a predetermined allowable range, said second communication unit from said signal line.