| 摘要 |
PROBLEM TO BE SOLVED: To provide a communication system that reduces noise which is converted from a common mode to a differential mode and inputs into a PLC communication device, and thereby can prevent the malfunction of the PLC communication device.SOLUTION: A communication system comprises: a control line 1d for transmitting a control signal to control charging a battery 10 mounted on a vehicle 1; a reference potential line 1c connected with the reference potential of the vehicle 1 serving as the control signal; a first PLC communication device 14 that is connected with the control line 1d and the reference potential line 1c, and communicates with an external power supply device 2 by superposing a differential signal with a frequency higher than the control signal on the control signal; and an induction element 18 that is provided at the reference potential line 1c and a connection point of reference potential, or in the middle of the reference potential line 1c, and its impedance to the high-frequency noise is larger than the impedance to the control signal.SELECTED DRAWING: Figure 1 |
