Patent ID: 9160409
Filing Date: 2015-10-13
Classification: B60L,H02J,H04B,Y02T,Y04S

Abstract:
1. A communication apparatus for providing communication between a power supply device to a load device through an electric line, which is provided detachably between the power supply device and the load device, the electric line including a power line, which supplies power from the power supply device to the load device, the communication apparatus comprising: a communication device for transmitting and receiving a communication signal through the electric line; a detecting circuit for detecting impedance of the electric line; and a control circuit for switching over the communication device between a waiting state and an operating state based on the impedance detected by the detecting circuit, wherein the load device includes a secondary battery, which is charged by the power supply device through the electric line, the communication device, the detecting circuit and the control circuit are provided in the load device, and the detecting circuit includes an output circuit for outputting an inspection signal to the line and detecting the impedance of the electric line in response to the inspection signal.