COMMUNICATION SYSTEM, COMMUNICATION DEVICE, POWER SUPPLY DEVICE, AND VEHICLE

摘要

A communication system, a communication device, a power supply device, and a vehicle are provided, which can suppress occurrence of communication abnormality while suppressing noise applied to a power supply line to be lower than a predetermined upper limit value of a standard, in communication such as inband communication in which a vehicle and a power supply device are connected to each other via a charging cable containing the power supply line and a control line, and a communication signal is transmitted and received using the control line as a medium. A power supply device 2 reads setting relating to an output for each frequency which is previously stored in a memory 221b, and performs a mapping process of adjusting, based on the read setting, an output waveform relating to transmission of the communication signal to an amplitude previously set for each frequency. Then, the power supply device 2 executes inverse fast Fourier transform on the mapped communication signal to convert the communication signal represented as digital data on a frequency domain into digital data on a time domain, and converts the digital signal into analog signal to be transmitted.

主权项

1. A communication system in which a vehicle including a power storage device and a power supply device that supplies power to the power storage device are connected to each other via a power supply line used for power supply and a control line for transmitting a control signal required for control of the power supply using the power supply line, and a communication signal different from the control signal is transmitted and received using the control line as a medium, wherein
at least one of the vehicle and the power supply device includes a transmission section that transmits the communication signal, and the transmission section includes adjustment means that adjusts an output waveform relating to the transmission of the communication signal to an amplitude previously set for each frequency.