KR20110101846A - Data service system on power line communication with electric car charging device - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a power line data communication system. More particularly, the present invention relates to an OBD (On Board Diagonastic), which can serve as a charging of an electric vehicle, and can monitor and control the state of charge, and can be displayed in the vehicle to display state information of the vehicle. The present invention relates to a power line data communication system including a vehicle charging module capable of communicating by using a power line and a vehicle device module such as a terminal, a black box, and a navigation system to assist driving.
A power line data communication system which also serves as a vehicle charging device according to the present invention includes a power supply unit for supplying DC power to a vehicle; A storage battery connected to the power supply unit through a power line and storing power; A charge detection and control unit connected between the power supply unit and the storage battery to sense a charging state and control charging; One or more vehicle device modules mounted on the vehicle and providing information related to driving of the vehicle; A vehicle information control module connected to the vehicle device module to convert information of the vehicle into a power line communication signal and to transmit and receive data to the power line; An integrated PLC communication unit connected to the power line to perform data communication with the individual vehicle information control module; And an integrated control unit connected to the integrated PLC communication unit to control overall charging and PLC communication.

Description

Power Line Data Communication System with Vehicle Charging Device {Data Service System on Power Line Communication with Electric Car Charging Device}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a power line data communication system. More particularly, the present invention relates to an OBD (On Board Diagonastic), which can serve as a charging of an electric vehicle, and can monitor and control the state of charge, and can be displayed in the vehicle to display state information of the vehicle. The present invention relates to a power line data communication system including a vehicle charging module capable of communicating by using a power line and a vehicle device module such as a terminal, a black box, and a navigation system to assist driving.

It is predicted that there will be fewer and fewer cars powered by oil, and more cars will be powered by electricity in the future. Therefore, a device for charging an electric vehicle using DC electricity as a power source is required, and power line communication (PLC) becomes possible during charging. In other words, it is possible to transmit and receive necessary information at the same time as charging.

In particular, OBD (On Board Diagnostics) installed in the vehicle monitors driving information and control parts or vehicle system during operation of the vehicle, and informs the driver through a guide when a failure is diagnosed. In-vehicle devices, such as a black box for recording and storing the driving information of the vehicle and the screen or video at the time of operation. It sends out relevant information so that the driver can constantly monitor the vehicle's condition and driving environment when driving. In addition, a navigation device, which is a navigation information system that supports driving of a vehicle by mounting map information, is also widely installed and used in a vehicle. Therefore, it would be convenient if the information of the vehicle device devices could communicate with the server connected to the outside through the PLC at the same time without charging the vehicle without special communication device or special management of the user.

In fact, car fire insurers install a dongle, which is a connection terminal on the OBD or OBD II OBD-extended OBD II device, to reduce insurance premiums on vehicles that comply with the system. After storing the driving information of the company, the user plans to insert the USB memory into the computer about once a year and then connect to the insurance company's server and transmit the related information. That is, the user's direct work of transmitting information of the OBD terminal to the insurance company's server is necessary to confirm whether the vehicle was operated on the designated day. Also, in the future, insurance companies will not rely on the current system that simply relies on the driver's driving experience in order to calculate the appropriate insurance premium for any vehicle, and move on to a system based on driving information such as annual actual distance and driver's driving habits. If vehicle-related information from OBD devices such as mileage and acceleration / deceleration information is stored in the insurance company's server through PLC without any direct involvement while the vehicle is being charged, the most desirable and reliable method is Will be.

The existing technology related to the vehicle and PLC communication is a network system of a vehicle using a power line (registration number 10-066007045). However, the system is simply a conversion of CAN lines for power lines.

Accordingly, the present invention has been made to solve the above problems, an object of the present invention is to control the state of charge when charging the electric vehicle vehicle and at the same time automatically send information such as OBD to the external server through the PLC In addition, the present invention provides a power line data communication system that also serves as a vehicle charging device for transferring information required by a server to an in-vehicle vehicle module.

Power line data communication system also serves as a vehicle charging device according to the present invention for achieving the above object and a power supply for supplying a DC power to the vehicle; A storage battery connected to the power supply unit through a power line and storing power; A charge detection and control unit connected between the power supply unit and the storage battery to sense a charging state and control charging; One or more vehicle device modules mounted on the vehicle and providing information related to driving of the vehicle; A vehicle information control module connected to the vehicle device module to convert information of the vehicle into a power line communication signal and to transmit and receive data to the power line; An integrated PLC communication unit connected to the power line to perform data communication with the individual vehicle information control module; And an integrated control unit connected to the integrated PLC communication unit to control overall charging and PLC communication.

A network gateway (Residential Gateway) for transmitting and receiving the information obtained inside the vehicle or the information provided to the vehicle from the outside through the integrated PLC communication unit; It includes a server that stores information related to the vehicle delivered from the network repeater or stores information to be sent to the individual vehicle device module.

The vehicle information control module includes a device data interface unit connected to one or a plurality of vehicle device modules to transmit or receive data; A module-specific PLC communication unit connected to the power line and transmitting and receiving a power line signal; And a control unit for controlling the device data interface unit and the PLC communication unit for each module so as to transmit information of the individual vehicle device module to the integrated PLC communication unit through the power line signal or to transmit a signal of the integrated PLC communication unit to the individual vehicle device module. .

The integrated PLC communication unit is an AC coupling unit for separating only the high frequency components from the power line; And an modulation / demodulation unit connected to the AC coupling unit to modulate a data signal separated from the power line in order to demodulate or transmit data to the power line.

The module-specific PLC communication unit may include an AC coupling unit for separating only a high frequency component from the power line; And an modulation / demodulation unit connected to the AC coupling unit to modulate a data signal separated from the power line in order to demodulate or transmit data to the power line.

The vehicle device module includes an OBD (On Board Diagnostic) device, a vehicle black box device that stores a driving information and a screen or image at the time of operation, and a map information, and a navigation information system that assists the operation of the vehicle. At least one of (Navigation system) is selected and configured.

The present invention having the above-described configuration has the advantage that the data of the vehicle device module can be transmitted to the external server without direct manipulation by the user at the same time as the charging.

In particular, if the vehicle device module is an OBD or OBD II device, the user's direct involvement is excluded, so that the user's data cannot be manipulated, and the insurance company can know the driving information of the individual vehicle every time it is charged. It is effective to improve. In addition, when the relevant information is linked with the server of the automobile manufacturer or the maintenance shop, the abnormality of the vehicle can be reviewed and notified to the user, so that the user can detect an accident or maintenance-related problem in advance and respond appropriately. . In this case, the insurer can lower the premium by drastically reducing the cost of handling the accident, resulting in the effect of reducing the cost of the user.

When the vehicle device module is a vehicle black box, image information is often stored in an external server through the PLC together with time information and position information stored in a memory during charging, thereby securing image information without driver's data manipulation and thus objectively in case of an accident. It secures video information and increases the chance of securing video information recorded in a vehicle traveling to or from a nearby vehicle through time information in case of another vehicle accident.

When the vehicle device module is a vehicle navigation system, it is possible to calculate the charging time, the amount of data to be transmitted and the transmission time through the charge detection and control unit and the integrated control unit. In the case of a system, it is possible to update a map or a program while charging.

In addition, charging is possible according to the amount of charge when the vehicle is charged through a charger installed in a charging station equipped with a car charging and communication system or a parking lot in an apartment complex, and the charging rate and charging information of an individual user are displayed through a PLC.

Hereinafter, described in detail with reference to the accompanying drawings a preferred embodiment of the present invention. If it is determined that the detailed description of the known function or configuration related to the present invention may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted.

1 is a configuration diagram of a "power line data communication system as a vehicle charging device" according to the present invention, Figure 2 is a configuration diagram of the PLC communication unit, Figure 3 is a circuit diagram showing the configuration of the AC coupling unit.

As shown in FIG. 1, in order to charge the battery 130 of the vehicle, the terminal of the vehicle power line 360 is connected to the charge detection and control unit 140 connected to the power supply unit 120 in the vehicle charging and communication system. Charging will begin. The charge detection and control unit 140 monitors the state of charge and calculates the amount of charge to enable charging according to the amount of charge. That is, it detects the amount of charge before charging and automatically terminates the charging when the charging is completed, and calculates the charge until then by calculating the charging amount up to the present. The charge detection and control unit 140 may configure the detection unit by configuring general circuits for detecting the amount of current flowing into the power line of the vehicle from the power supply unit 120 and the voltage of the battery. In general, since a DC voltage is used in a vehicle, the amount of power supplied to the vehicle is detected from a voltage and a current value detected by detecting a DC voltage and a DC current supplied to a battery, and a measured voltage V (t) and a current I (t) in a DC form. It can be calculated simply by multiplying by) and integrating with time.

Voltage and current can be measured from the sensor, digitized using an A / D converter, etc., and then simply calculated by computing with a microprocessor.

In addition, the charge detection and control unit 140 is configured to include a control unit that can cut off or connect the power of the power supply unit 120 by grasping the degree of charge from the sensed voltage of the battery and the current flowing in. The method of turning the power ON / OFF can be implemented by simply driving a relay when receiving an ON / OFF control signal, or can be implemented by using a transistor or a FET as an electrical switch. These matters are known techniques used in existing general charging devices, and a detailed description thereof will be omitted.

While charging is performed, the vehicle information control module 150 inside the vehicle transmits data related to driving and management of the vehicle from the vehicle device module 160 through the data signal line 170 to the internal device data interface unit 151. ) To collect. The collected data related to the operation of the vehicle transmits the data to the vehicle charging and communication system 100 outside the vehicle by the power line communication method using the power line 360 in the vehicle through the PLC communication unit 153 for each module. In the same power line communication method, data necessary for driving and managing the vehicle may be transmitted from the vehicle charging and communication system 100, which is the case in which data transmission directions are reversed, to the vehicle device module 160. The controller 152 of the vehicle information control module 150 controls the device data interface unit 151 and the module-specific PLC communication unit 153 to classify and process the data flow direction and the type of data.

The vehicle device module 160 may include devices required for operation and management of a vehicle, such as a vehicle black box and navigation information system, in addition to the OBD (On Board Diagnostic) or OBD II apparatus required for driving and inspecting the vehicle. Can be.

The vehicle charging and communication system 100 is a remotely located via the network repeater 104 the data necessary for the operation and management of each vehicle received by the power line communication from a plurality of vehicles through the integrated PLC communication unit 101 Or transmit to a plurality of servers 110 classified by type. In addition, the vehicle information control module 150 of each vehicle in the power line communication method through the integrated PLC communication unit 102 by receiving the data necessary for the operation and management of each vehicle transmitted from the remote server 110 through the network repeater 104 ) Can be sent. The network repeater 104 is a device for interconnecting two different networks, functions to convert protocols, and may be a device such as a gateway or a router. The integrated control unit 101 connected to the integrated PLC communication unit 102 plays a role of controlling overall charging and PLC communication. That is, it is possible to calculate the charge by detecting the state of charge and time, and transmit and receive the communication data classified by type, and also responsible for the scheduling function of the processor when transmitting and receiving data. In this case, the memory unit 103 may be connected to the integrated control unit 101 to store data received or transmitted from the vehicle.

2 shows an example of a specific configuration of the above-described module-specific PLC communication unit 153 or integrated PLC communication unit 102. Each module 153 or integrated PLC communication unit 102 has a modulator demodulator 310 that modulates or demodulates data for PLC communication, and directs a signal having an AC frequency component modulated and demodulated by the modulator demodulator 310. It includes an AC coupling unit 350 to cut off the DC voltage and to transmit and receive only the AC signal component from the PLC communication unit in order to raise the DC power line with the voltage. The role of the AC coupling unit 350 is to prevent the DC voltage in the power line from being electrically connected to the PLC communication unit and to transmit or receive only AC frequency components through the power line.

3 shows an example of the configuration of the AC coupling unit 350 included in the PLC communication unit. The transformer L 351 is connected to the power line 360 through the resistor R 352 and the capacitor C 353. When passing through 353, the DC voltage in the power line is cut off, and only the AC frequency voltage component is configured to be received or transmitted to the demodulation unit 310. The transformer L 351 has a function of transmitting a signal while electrically insulating the power line and the demodulation unit.

Car charging and communication system (100) Integrated control unit (101)
Integrated PLC communication unit 102 Memory unit 103
Network Repeater (104) Servers (110)
Power Supply Unit 120 Power Line 360
Charge Detection and Control Unit 140 Vehicle Information Control Module 150
Device Data Interface Unit 151 Control Unit 152
PLC communication module for each module (153) Vehicle device module (160)
Data Signal Lines (170) Storage Batteries (180)
Modulation and Demodulation Unit (310) AC Coupling Unit (350)

Claims (8)

A power supply unit supplying DC power to the vehicle;
A power line connected to the power supply unit to supply power and data signals to a vehicle;
A storage battery connected to the power supply unit through the power line to store power;
A charge detection and control unit connected between the power supply unit and the storage battery to sense and control a charging state;
One or more vehicle device modules mounted on the vehicle and providing information related to driving of the vehicle;
A vehicle information control module connected to the vehicle device module to convert information of the vehicle into a signal for power line communication and transmit and receive data to the power line;
A vehicle charging and communication system connected to the power line for performing data communication with the individual vehicle information control module and controlling total charging and PLC communication;
Power line data communication system with a vehicle charging device, characterized in that comprises a
The method of claim 1,
The car charging and communication system
An integrated PLC communication unit connected to the power line to perform data communication with the individual vehicle information control module;
An integrated control unit connected to the integrated PLC communication unit to control overall charging and PLC communication;
Power line data communication system with a vehicle charging device, characterized in that consisting of
The method of claim 1,
The car charging and communication system
When connected to an external server through a network repeater connected to the integrated PLC communication unit for transmitting and receiving data of an individual vehicle device module to the outside, information related to the vehicle transmitted from the network repeater is transmitted and stored in the server or stored in the server Power line data communication system with a vehicle charging device, characterized in that receiving and transmitting to the individual vehicle module
The method according to claim 2 or 3,
The car charging and communication system
A memory unit connected to the integrated controller to store data of an individual vehicle device module or to store data transmitted / received through the network repeater;
Power line data communication system with a vehicle charging device, characterized in that further comprises
The method of claim 1,
The vehicle information control module
A device data interface unit connected to one or a plurality of vehicle device modules to transmit or receive data;
A module-specific PLC communication unit connected to the power line to transmit and receive a power line signal;
A control unit for controlling the device data interface unit and the PLC communication unit for each module so as to transmit information of the individual vehicle device module to the integrated PLC communication unit or the signal of the integrated PLC communication unit to the individual vehicle device module through the power line signal;
Power line data communication system with a vehicle charging device, characterized in that consisting of
The method of claim 2,
Integrated PLC communication unit
An AC coupling unit for separating only a high frequency component from the power line;
A demodulation unit connected to the AC coupling unit to modulate a data signal separated from the power line to demodulate or transmit data to the power line;
Power line data communication system with a vehicle charging device, characterized in that having a
6. The method of claim 5,
PLC communication module by module
An AC coupling unit for separating only a high frequency component from the power line;
A demodulation unit connected to the AC coupling unit to modulate a data signal separated from the power line to demodulate or transmit data to the power line;
Power line data communication system with a vehicle charging device, characterized in that having a
The method of claim 1,
The vehicle device module includes an OBD (On Board Diagnostic) device, a vehicle black box device that stores a vehicle's driving information and a screen or image at the time of operation, and a navigation information system that supports a vehicle's operation by mounting a map ( Power line data communication system with vehicle charging device, characterized in that at least one of

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