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

  • US 9,688,156 B2
  • Filed: 12/23/2014
  • Issued: 06/27/2017
  • Est. Priority Date: 07/15/2009
  • Status: Active Grant
First Claim
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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 a communication between the electric vehicle and the charging station;

    using one or more of the following communication connections for the communication between the electric vehicle and the charging station;

    a power line communication (PLC) 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; and

    a communication connection which is isolated from the charging cable;

    indicating via one of the communication connections a plurality of states of the electric vehicle, the states including a first state, which indicates that the electric vehicle is ready for charging the at least one energy storage device, 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 second state and the first state representing a signaling by way of which the unlocking of the mechanical coupling between the terminal of the charging cable and the terminal of the charging station is triggered.

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