Communication system and communication device

Patent metadata

Field	Value
Publication number	US-2018326854-A1
Application number	US-201515525698-A
Country	US
Kind code	A1
Filing date	Nov 6, 2015
Priority date	Nov 14, 2014
Publication date	Nov 15, 2018
Grant date	—

Abstract

A communication system including: a control line transmitting a control signal for controlling charging of a battery of a vehicle; a reference potential line connected to a reference potential of the vehicle; a first PLC communication device connected individually to the control line and the reference potential line and superposing onto the control signal a differential signal having a higher frequency than the control signal so as to perform communication with an external power supply apparatus; an inductive element which is provided in the reference potential line and the inductive element having impedance for a noise having a higher frequency than the control signal is higher than the impedance for the control signal; and a second inductive element provided in a wire connecting the first PLC communication device to a lead battery.

First claim

1 .- 6 . (canceled)

7 . A communication system comprising:
a control line transmitting a control signal for controlling charging of a battery mounted on a vehicle ( 1 ); a reference potential line connected to a reference potential; a communication device connected to the control line and the reference potential line serving as a transmission medium of a differential signal and superposing onto the control signal the differential signal having a higher frequency than the control signal so as to perform communication with an external power supply apparatus; a first inductive element which is provided at a point of connection between the reference potential line and the reference potential or provided in the reference potential line and the first inductive element having impedance for a noise having a higher frequency than the control signal is higher than the impedance for the control signal; a wire for connecting the communication device to another battery; and a second inductive element which is provided at a point of connection between the wire and the another battery or provided in the wire and the second inductive element having impedance for a noise having a higher frequency than the control signal is higher than the impedance for the control signal.

8 . The communication system according to claim 7 , wherein
the communication device includes: a circuit board holding the second inductive element; and a cover made of resin and covering the circuit board holding the second inductive element.

9 . The communication system according to claim 8 , wherein
the communication device includes: a filter separating the differential signal from the control signal; and a coupling transformer connected to the filter, and wherein the cover is constructed such as to cover the filter and the coupling transformer.

10 . The communication system according to claim 7 , comprising
a receiving circuit connected to the control line so as to receive a control signal transmitted from the external power supply apparatus.

11 . The communication system according to claim 10 , comprising
a third inductive element which is provided in a wire connecting the receiving circuit to the reference potential and the third inductive element having impedance for a noise having a higher frequency than the control signal is higher than the impedance for the control signal.

12 . A communication device which is connected to a control line transmitting a control signal for controlling charging of a battery mounted on a vehicle and to a reference potential line connected to a reference potential and which superposes onto the control signal a differential signal having a higher frequency than the control signal so as to perform communication with an external power supply apparatus, comprising:
a wire for connecting the communication device to another battery; and an inductive element which is provided at a point of connection between the wire and the another battery or provided in the wire and the inductive element having impedance for a noise having a higher frequency than the control signal is higher than the impedance for the control signal.

Assignees

• Autonetworks Technologies Ltd
• Sumitomo Wiring Systems
• Sumitomo Electric Industries
• Toyota Motor Co Ltd

Inventors

• Okada Ryo
• Hagihara Takeshi
• Tanaka Ryo
• Nakagawa Nobuyuki
• Hayashizaki Kengo

Classifications

• Y02T90/16

  Information or communication technologies improving the operation of electric vehicles · CPC title

• Y02T10/7072

  Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors · CPC title

• H04B3/56 Primary

  Circuits for coupling, blocking, or by-passing of signals · CPC title

• Y02T90/14

  Plug-in electric vehicles · CPC title

• H04L25/0276 Primary

  Arrangements for coupling common mode signals · CPC title