Communication system, communication device, power-supply device and vehicle

Abstract

Provided are: a communication system for connecting a vehicle and a power-supply device by a charging cable which houses a power-supply line and a control line therein, and capable of suppressing the occurrence of communication abnormalities while keeping noise imparted to the power-supply line at or below a stipulated upper limit, in communication such as inband communication for transmitting and receiving a communication signal with the control line as the medium therefor; a communication device; a power-supply device; and a vehicle. A power-supply device (2) reads the settings pertaining to the output of each frequency stored in advance in a memory unit (221b), and performs mapping processing for adjusting an output waveform pertaining to communication signal transmission to the amplitude set in advance for each frequency, on the basis of the read settings. In addition, by subjecting the mapped communication signal to an inverse Fourier transform, the power-supply device (2) converts the communication signal expressed as digital data in a frequency region to digital data in a time region, and also D/A converts the same into analog data.

Description

technical field [0001] The present invention relates to a communication system, a communication device, a power supply device, and a vehicle by means of a control for transmitting a control signal when a power supply line is used for power supply Wires are used as a medium to send and receive communication signals different from the control signals required to control power supply. Background technique [0002] In recent years, electric vehicles and hybrid vehicles have become popular, which include devices such as a motor and a battery, and travel by driving the motor using electric power stored in the battery. An electric vehicle charges its battery with electric power supplied from an external power supply device. As for hybrid vehicles, plug-in hybrid vehicles have actually been used, which allow their batteries to be charged by an external power supply. The external power supply device is a power supply device installed in ordinary houses or facilities such as commerc...

AI Technical Summary

Problems solved by technology

[0012] However, in such Figure 9 In the illustrated system related to communication such as in-band communication, if the communication signal transmitted through the control line 3004 crosstalks the power supply lines 3001 and 3002, noise occurs in the power supply lines 3001 and 3002

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