| 摘要 |
The present invention relates to charging of an electric vehicle. An add-on communication apparatus attached to an in-cable charging control apparatus which is integrally attached to a cable assembly for charging an electric vehicle comprises a plurality of communication modules which communicate with a terminal device and a control unit. The control unit determines a first communication module as a communication module, which transmits a message, of the plurality of communication modules. When an identification message for informing that the terminal device normally receives the message is abnormal, the control unit determines a second communication module as a communication module, which transmits the message again, of the rest communication modules except for the first communication module of the plurality of communication modules. |
