Communication system and communication device

• US 9,735,832 B2
• Filed: 07/13/2012
• Issued: 08/15/2017
• Est. Priority Date: 07/13/2011
• Status: Active Grant

• Current Assignee: Autonetworks Technologies, Ltd. (Sumitomo Corporation), Sumitomo Electric Industries Limited (Sumitomo Corporation), Sumitomo Wiring Systems Limited (Sumitomo Corporation), Toyota Jidosha Kabushiki Kaisha (Toyota Motor Corporation)
• Original Assignee: Autonetworks Technologies, Ltd. (Sumitomo Corporation), Sumitomo Electric Industries Limited (Sumitomo Corporation), Sumitomo Wiring Systems Limited (Sumitomo Corporation), Toyota Jidosha Kabushiki Kaisha (Toyota Motor Corporation)
• Inventors: Hagihara, Takeshi, Komatsu, Yutaka, Okada, Ryou, Takata, Yousuke, Izumi, Tatsuya, Nii, Kazuhiko, Andoh, Hiroya, Ochiai, Yuta, Kamaga, Ryuichi, Iwai, Atsushi, Miyashita, Yukihiro, Nakagawa, Nobuyuki
• Primary Examiner(s): BARNIE, REXFORD N
• Assistant Examiner(s): Chowdhuri, Swarna N
• Application Number:
  US14/232,218
• Publication Number:
  US 20140292069A1
• Time in Patent Office: 1,859 Days
• Field of Search: None
• CPC Class Codes: B60L 2210/30 AC to DC converters
• CPC Class Codes: B60L 2240/527 Voltage
• CPC Class Codes: B60L 2270/147 electro magnetic [EMI]
• CPC Class Codes: B60L 53/16 Connectors, e.g. plugs or sockets, specially adapted for charging electric vehicles
• CPC Class Codes: B60L 53/30 Constructional details of charging stations
• CPC Class Codes: B60L 53/65 involving identification of vehicles or their battery types
• CPC Class Codes: B60L 58/12 responding to state of charge [SoC]
• CPC Class Codes: B60R 16/0231 Circuits relating to the driving or the functioning of the vehicle monitoring tyres B60C23/00; indicating overspeed B60K31/00; for dash boards B60K37/00, B60Q3/10; for indicating emergencies B60Q1/52; brake control systems B60T; registering or indicating the working of vehicles G07C5/00; measuring distance G01C, e.g. combinations of speed and distance G01C23/00; engine indicators G01L; measuring speed or acceleration G01P
• CPC Class Codes: H04B 2203/5416 by adding signals to the wave form of the power source
• CPC Class Codes: H04B 2203/547 via DC power distribution
• CPC Class Codes: H04B 3/54 Systems for transmission via power distribution lines
• CPC Class Codes: H04B 3/548 the power on the line being DC arrangements for feeding power H04L12/10; extracting feeding power from signals H04L25/02
• CPC Class Codes: Y02T 10/70 Energy storage systems for electromobility, e.g. batteries
• CPC Class Codes: Y02T 10/7072 Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
• CPC Class Codes: Y02T 10/72 Electric energy management in electromobility
• CPC Class Codes: Y02T 90/12 Electric charging stations
• CPC Class Codes: Y02T 90/14 Plug-in electric vehicles
• CPC Class Codes: Y02T 90/16 Information or communication technologies improving the operation of electric vehicles
• CPC Class Codes: Y02T 90/167 Systems integrating technologies related to power network operation and communication or information technologies for supporting the interoperability of electric or hybrid vehicles, i.e. smartgrids as interface for battery charging of electric vehicles [EV] or hybrid vehicles [HEV]
• CPC Class Codes: Y04S 30/14 Details associated with the interoperability, e.g. vehicle recognition, authentication, identification or billing

Abstract

An output circuit sends a control pilot signal generated in a voltage generator to an input circuit. A communication unit is connected between an earthed wire and a control pilot wire on the output side of the output circuit via a bandpass filter. A communication unit is connected between the earthed wire and the control pilot wire on the input side of the input circuit via a bandpass filter. A low-pass filter is interposed between the output circuit and the communication unit. A low-pass filter is interposed between the input circuit and the communication unit.

Claims

1. A communication system including an output circuit provided in a power feeding device for feeding power to a vehicle and outputting a rectangular wave signal of a predetermined frequency, and an input circuit provided in the vehicle and connected with the output circuit through a plurality of signal lines, the rectangular wave signal output by the output circuit being input to the input circuit, the communication system performing communication between the vehicle and the power feeding device by superimposing a communication signal onto the signal lines, comprising:

a first series circuit in the power feeding device, connected between the signal lines, and comprising;

a first communication unit, configured to perform transmission and reception of a communication signal, and a first bandpass filter;

a second series circuit in the vehicle, connected between the signal lines, and comprising;

a second communication unit, configured to perform transmission and reception of a communication signal, and a second bandpass filter;

a first low pass filter interposed between the output circuit and the first communication unit; and

a second low pass filter interposed between the input circuit and the second communication unit, wherein

one end of the first communication unit of the first series circuit is directly and only connected to one end of the first bandpass filter, and

one end of the second communication unit of the second series circuit is directly and only connected to one end of the second bandpass filter.

2. The communication system according to claim 1, wherein

each of the first and second low pass filters includes an inductor connected in series with the signal line.

3. The communication system according to claim 2, wherein

each of the first and second low pass filters includes a resistance connected in parallel with the inductor.

4. The communication system according to claim 2, wherein

each of the first and second low pass filters includes a resistance connected in series with the inductor.

5. The communication system according to claim 2, wherein

each of the first and second low pass filters includes a serial circuit of a capacitor and a resistance between signal lines on one end of the inductor.

6. The communication system according to 1, wherein

the output circuit is configured to output a rectangular wave signal of 1 kHz, and

rise time and fall time of the rectangular wave signal on an input side of the input circuit correspond to 10 μ

s or shorter.

7. The communication system according to claim 2, wherein

the output circuit is configured to output a rectangular wave signal of 1 kHz, and

rise time and fall time of the rectangular wave signal on an input side of the input circuit correspond to 10 μ

s or shorter.

8. The communication system according to claim 3, wherein

the output circuit is configured to output a rectangular wave signal of 1 kHz, and

rise time and fall time of the rectangular wave signal on an input side of the input circuit correspond to 10 μ

s or shorter.

9. The communication system according to claim 4, wherein

the output circuit is configured to output a rectangular wave signal of 1 kHz, and

rise time and fall time of the rectangular wave signal on an input side of the input circuit correspond to 10 μ

s or shorter.

10. The communication system according to claim 5, wherein

the output circuit is configured to output a rectangular wave signal of 1 kHz, and

rise time and fall time of the rectangular wave signal on an input side of the input circuit correspond to 10 μ

s or shorter.

11. A communication device including an output circuit outputting a rectangular wave signal of a predetermined frequency through a plurality of signal lines, comprising:

a series circuit connected between the signal lines and comprising;

a communication unit, configured to perform transmission and reception of a communication signal by superimposing a communication signal onto the signal lines, and a bandpass filter; and

a low pass filter interposed between the output circuit and the communication unit, wherein

one end of the communication unit of the series circuit is directly and only connected to one end of the bandpass filter.

12. The communication device according to claim 11 further comprising:

a generation unit generating the rectangular wave signal;

a voltage detection unit detecting an output voltage of the output circuit; and

an adjustment unit adjusting a rectangular wave signal generated by the generation unit in accordance with the voltage detected by the voltage detection unit.

13. A communication device, including an input circuit to which a rectangular wave signal of a predetermined frequency is input through a plurality of signal lines, comprising:

a series circuit connected between the signal lines and comprising;

a communication unit, configured to perform transmission and reception of a communication signal by superimposing a communication signal onto the signal lines, and a bandpass filter; and

a low pass filter interposed between the input circuit and the communication unit, wherein

one end of the communication unit of the series circuit is directly and only connected to one end of the bandpass filter.

14. The communication device according to claim 13, further comprising:

a resistance unit having a plurality of resistances and capable of adjusting a resistance value; and

an adjustment unit adjusting a resistance value of the resistance unit so as to change a voltage of the resistance unit.