Method and system for communication between a vehicle and a charging station for locking and unlocking mechanical charging cable coupling

摘要

A method for communicating between an electric vehicle and a charging station for electrically charging at least one energy storage device of the electric vehicle. The electric vehicle is connected to the charging station during the charging process by a lockable mechanical coupling between a terminal of charging cable connected to the vehicle and a terminal of the charging station. Charging current is fed from the charging station through the charging cable. Information is transferred in the course of the charging process based on a communication between the electric vehicle and the charging station. The information includes a signal transmitted from the electric vehicle to the charging station for locking and/or unlocking the mechanical coupling. The signal triggers the locking and/or unlocking of the mechanical coupling between the terminal of the charging cable and the terminal at the charging station.

主权项

1. A communication method between an electric vehicle and a charging station,
wherein, during a charging operation for electrically charging the electric vehicle, the electric vehicle is connected to the charging station via a lockable mechanical coupling between a terminal of a charging cable connected to the electric vehicle and a terminal of the charging station, and charging current is supplied from the charging station to at least one energy storage device of the electric vehicle through the charging cable, the method comprising: transmitting information over a course of the charging operation for communication between the electric vehicle and the charging station, the information transmitted from the electric vehicle to the charging station including a signaling for locking the mechanical coupling, to thereby trigger in the charging station a locking of the mechanical coupling between the terminal of the charging cable and the terminal of the charging station via the signaling; using one or more of the following communication connections for the communication between the electric vehicle and the charging station:
a PLC communication connection through one or more current-conducting lines of the charging cable;a monitoring connection that is isolated from the current-conducting lines in the charging cable; anda communication connection which is isolated from the charging cable; indicating a plurality of states of the electric vehicle via the monitoring connection, the states including a first state, which indicates that the electric vehicle is ready for charging at least one of its energy storage devices, and a second state, which indicates that the at least one energy storage device of the electric vehicle is being charged via the charging cable, with a change between the first and second states representing the signaling by way of which the locking of the mechanical coupling between the terminal of the charging cable and the terminal of the charging station is triggered.