COMMUNICATION SYSTEM, COMMUNICATION DEVICE, POWER SUPPLY DEVICE, AND VEHICLE

• US 20150023438A1
• Filed: 02/05/2013
• Published: 01/22/2015
• Est. Priority Date: 02/28/2012
• Status: Active Grant

• Current Assignee: Autonetworks Technologies, Ltd. (Sumitomo Corporation), Sumitomo Electric Industries Limited (Sumitomo Corporation), Sumitomo Wiring Systems Limited (Sumitomo Corporation)
• Original Assignee: Autonetworks Technologies, Ltd. (Sumitomo Corporation), Sumitomo Electric Industries Limited (Sumitomo Corporation), Sumitomo Wiring Systems Limited (Sumitomo Corporation)
• Inventors: Takata, Yousuke, Okada, Ryou, Nii, Kazuhiko, Hagihara, Takeshi
• Granted Patent: US 9,287,996 B2
• Time in Patent Office: Days
• US Class Current: 375/257
• CPC Class Codes: B60L 2210/30 AC to DC converters
• CPC Class Codes: B60L 53/16 Connectors, e.g. plugs or sockets, specially adapted for charging electric vehicles
• CPC Class Codes: B60L 53/18 Cables specially adapted for charging electric vehicles
• CPC Class Codes: B60L 53/65 involving identification of vehicles or their battery types
• CPC Class Codes: H02J 7/00034 Charger exchanging data with an electronic device, i.e. telephone, whose internal battery is under charge
• CPC Class Codes: H02J 7/0047 with monitoring or indicating devices or circuits
• CPC Class Codes: H04B 15/02 Reducing interference from electric apparatus by means located at or near the interfering apparatus
• CPC Class Codes: H04B 2203/5425 improving S/N by matching impedance, noise reduction, gain control
• CPC Class Codes: H04B 2203/547 via DC power distribution
• CPC Class Codes: H04B 2215/00 Reducing interference at the transmission system level
• 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

A communication system, a communication device, a power supply device, and a vehicle are provided, which can suppress occurrence of communication abnormality while suppressing noise applied to a power supply line to be lower than a predetermined upper limit value of a standard, in communication such as inband communication in which a vehicle and a power supply device are connected to each other via a charging cable containing the power supply line and a control line, and a communication signal is transmitted and received using the control line as a medium. A power supply device 2 reads setting relating to an output for each frequency which is previously stored in a memory 221b, and performs a mapping process of adjusting, based on the read setting, an output waveform relating to transmission of the communication signal to an amplitude previously set for each frequency. Then, the power supply device 2 executes inverse fast Fourier transform on the mapped communication signal to convert the communication signal represented as digital data on a frequency domain into digital data on a time domain, and converts the digital signal into analog signal to be transmitted.

Claims

1. A communication system in which a vehicle including a power storage device and a power supply device that supplies power to the power storage device are connected to each other via a power supply line used for power supply and a control line for transmitting a control signal required for control of the power supply using the power supply line, and a communication signal different from the control signal is transmitted and received using the control line as a medium, wherein

at least one of the vehicle and the power supply device includes a transmission section that transmits the communication signal, and

the transmission section includes adjustment means that adjusts an output waveform relating to the transmission of the communication signal to an amplitude previously set for each frequency.

2. The communication system according to claim 1, wherein

the transmission section further includes storage means in which setting relating to an output for each frequency is previously stored, and

the adjustment means

adjusts the communication signal by means of data on a frequency domain indicating an amplitude for each frequency, based on the setting for each frequency stored in the storage means, and

converts the communication signal as the data on the frequency domain into data on a time domain.

3. The communication system according to claim 1, wherein the adjustment means is configured to adjust the communication signal by orthogonal frequency-division multiplexing.

4. The communication system according to claim 1, wherein the setting of the amplitude for each frequency is determined based on crosstalk characteristics with respect to the power supply line.

5. A communication device which is connectable to a control line for transmitting a control signal required for control of power supply using a power supply line, and transmits a communication signal different from the control signal by using the control line as a medium, and

the communication device including means that adjusts an output waveform relating to the transmission of the communication signal to an amplitude previously set for each frequency.

6. A power supply device which is connectable to an external object to be supplied with power, via a power supply line used for power supply and a control line for transmitting a control signal required for control of the power supply using the power supply line, and transmits a communication signal different from the control signal by using the control line as a medium, and

the power supply device including means that adjusts an output waveform relating to the transmission of the communication signal to an amplitude previously set for each frequency.

7. A vehicle which includes a power storage device, is connectable to an external power supply device that supplies power to the power storage device, via a power supply line used for power supply and a control line for transmitting a control signal required for control of the power supply using the power supply line, and further includes a communication device that transmits a communication signal different from the control signal by using the control line as a medium, wherein

the communication device includes means that adjusts an output waveform relating to transmission of the communication signal to an amplitude previously set for each frequency.