Method for monitoring electrical components of e.g. electrically powered motor vehicle, involves avoiding usage of frequency band when change of frequency band used for communication of signal in charging line exists

摘要

A charging station (20) is arranged for charging an energy storage device of motor vehicle (1) through charging line (40). The charging line is electrically connected with motor vehicle and charging station during the charging process. The transmitting/receiving units (12, 22) are provided for processing the signals on charging line at high frequency band. The monitoring of whether the change of frequency band used for communication of signal exists is performed, and the frequency band is not used when change of frequency band used for communication of signal exists.