KR20110052773A - A remote metering system for the recharge of an electric vehicle - Google Patents

Abstract

PURPOSE: A remote metering system for charging an electric vehicle is provided to automatically pay the use of power and check the charging state of the electric vehicle in real time. CONSTITUTION: A remote charging system for charging an electric vehicle includes a charging terminal(200), a controller(230), and a charging power selecting unit(270). The charging terminal includes a user identifier(220) and a connector(212). The controller controls the charging terminal when a valid user is authenticated. The central management server includes a pavement server(160) which calculates the charging fee of the electric vehicle per a user by using the user information and the power use information transmitted from the controller.

Description

{A Remote Metering System for the Recharge of an Electric Vehicle}

The present invention can be used integrating with electricity, water, heating, gas, hot water remote metering and billing system of buildings, apartments, etc., user identification, electric vehicle charging, charging time reservation, charge status alarm, integrated charging The present invention relates to a vehicle charging remote meter reading system.

In large buildings and apartment houses where a large number of tenants live, the amount of gas, water, calories, electricity, etc. are read at each automatic meter installed at each customer, and the meter data is transmitted to the central management server installed at a remote location by wire or wireless communication. A remote metering system that transfers, manages and charges meter reading data is common.

1 and 2, conventional remote metering systems are disclosed.

Conventional remote meter reading system is a variety of meters for reading the use of water, hot water, gas, heating, power at each consumer, that is, water meter 110, hot water meter 111, heating meter 112, gas meter (113), the meter reading data from the power meter 114, etc. by using a wired or wireless communication method to concentrate the communication terminal unit 120 or generation-specific integrated meter device 121, and then the communication terminal unit 120 or the integrated meter reading device 121 ) Will send the meter reading data of each consumer to the relay device (130). The relay device 130 transmits the meter reading data of a plurality of customers (usually about 128 consumers per one relay device) to the central management server 150 of the building management room through the interface device 140.

The central management server 150 is a server that performs the monitoring and information processing of the entire building or complex, including the charging server 160 to automatically charge the charges according to water, hot water, gas, heating, and power usage of each customer. do.

In addition, if necessary, it is also possible for the meter reader to directly check the metering data in the integrated metering device 121 or the relay device 130 through the wireless terminal 170 called a handy terminal.

Communication method between meter, communication terminal block, integrated meter reading device, integrated remote meter reading server, and wireless terminal is selected according to the surrounding environment.D-PLC (power line communication), RS 232, RS 485, RFID, TCP / IP LAN Any form of communication, such as COAX, optical communication, or wireless LAN, is not a big problem for small meter reading data transmission.

D-PLC, RS 232, and RS 485 are commonly used in a typical remote meter reading system in a building or apartment house. However, the selection of a communication method in the remote meter reading system is only a selection of known technologies.

In recent years, the introduction of electric vehicles has been actively promoted to reduce the use of fossil fuels and greenhouse gas emissions. For example, plug-in hybrid vehicles and electric vehicles can be recharged by the user to charge the secondary battery of the electric vehicle or replace the battery. Should be used.

However, charging a secondary battery usually requires a long time, and even though a current service station provides a charging service, a large number of vehicles cannot be charged quickly due to space constraints. There is a need for a system that can charge a vehicle's secondary battery.

To this end, a charging system for electric power consumption according to charging an electric vehicle is required. Since a vehicle is not parked at a predetermined place, a system for identifying a user and processing a charge for electric power use accordingly is required.

The present invention has been devised to solve this problem is installed in the parking lot of buildings, multi-unit housing (hereinafter referred to as 'building'), has a user identification function and is connected to the central management server of the building, The present invention relates to an electric vehicle charging remote meter reading system that displays information according to an electric vehicle charging state in an image, text, or sound.

The present invention relates to an electric vehicle charging remote meter reading system installed in a parking lot of a building and used for charging an electric vehicle. The electric vehicle charging remote meter reading system includes a charging terminal, a controller for controlling a charging terminal, and a controller. It is configured to include a central management server to exchange information.

When the user connects the charger of the electric vehicle to the charging port of the charging terminal and authenticates the user identification through the user recognizer, the charging terminal controller controls the charging operation of the electric vehicle.

The controller performs functions such as controlling the charging current, reading power usage, preventing overcharging, and monitoring the operation status of the charging terminal, and controlling various types of information including user information transmitted from the user recognizer, power usage transmitted from the power meter, and charging status. It is sent to the central management server of the building. The central management server performs the charging according to the charging using the data received from the controller and the user information stored in the server, and displays the charging status on the wall pad installed in each customer through the wall pad server, or the external communication server. Through the transmission to the user's communication terminal (cell phone, etc.).

The user may set the charging start time and the forced charging end time to use the low-cost late night electricity when charging the electric vehicle, or allow the user to perform the charging only during the discounted time applied to the controller, such as the late-night electricity. Entering a command may cause the controller to automatically adjust the charging time accordingly.

The electric vehicle charging remote meter reading system according to the present invention can identify a user in a parking lot in a building, thereby charging the electric vehicle, and perform automatic charging for power consumption for each user.

Accordingly, it is possible to integrate the electric vehicle charging fee for each user with the existing bills such as water, gas, and heating.

In addition, by transmitting the charging state information of the vehicle to the wall pad and the user terminal, it is possible to obtain the effect that the user can check the charging state of the electric vehicle in real time.

Hereinafter, an electric vehicle charging remote meter reading system according to the present invention will be described in detail with reference to the accompanying drawings.

3 shows a schematic diagram of an electric vehicle charging remote meter reading system including an electric vehicle charging remote meter reading system according to the present invention.

A plurality of charging terminals 200 are installed in a parking lot of a building, and the connector of the electric vehicle is coupled to the connector 212 formed at the charging port 210 of the charging terminal to charge the battery of the electric vehicle. The charging fee according to the charging of the electric vehicle is charged to the user by the central management server that performs the remote metering of the building's water, gas, and hot water.

Hereinafter, the electric vehicle charging remote meter reading system will be described in more detail.

Referring to FIG. 4, a control unit including the communication unit 240, the controller 230, and the charging power selection unit 270 may control the plurality of charging terminals 200 integrally.

The electric vehicle charging terminal includes a user recognizer 220 that recognizes a user, a connector 212 for making electrical contact with the electric vehicle, a power meter 211 that reads the amount of power used, and a sensor unit 260 that monitors the state of the charging terminal. The controller 230 monitors the operation state of each component of the charging terminal through the measurement data of the sensor unit 260 and the error checking logic built into the controller itself, and displays information according to the command of the controller. The display unit 250 is included.

The power meter 211 may be installed in the charging terminal or integrated in the control unit.

User awareness

When the user inputs user information into the user recognizer 220 installed in the charging terminal, the charging terminal provides the user information and the charging terminal ID (for example, the charging terminal number) to the controller 230.

The means for inputting user information to the user recognizer is made through biometric information such as RFID, magnetic card, fingerprint / hongche, input of ID and password through the keypad, and reading of the user information storage chip inserted into the mobile phone terminal. Can be any type of information that can be managed by the central management server.

In addition, the user recognizer may have one user information input means or simultaneously have a plurality of user information input means.

When the controller 230 transmits the user information input from the user recognizer 220 to the central management server 150 through the communication unit 240, the central management server transmits authentication information indicating whether the user is a valid user to the controller. .

When notified of an invalid user from the central management server, the controller 230 does not start charging, and outputs a warning indication to the display unit 250. When it is determined that the user is valid from the central management server, the controller displays the corresponding charging terminal ( Power is supplied to 210 to begin charging.

Electric vehicle charging power supply

The voltage / current used to charge an electric vehicle is determined according to different countries, and it is possible to have a function of supplying various voltage / current.

The control unit may include a charging power selection unit 270, the charging power selection unit 270 converts the external power supply into an AC or DC voltage / current suitable for charging the electric vehicle connected to the charging terminal to be used by the user It has a transformer function or supplies a charging voltage / current selected from a plurality of external supply powers. The operation of the charging power selection unit can be performed by the methods A to C below.

A. The user selects the voltage / current for charging directly at the charging terminal and controls the charging power selector to supply the selected voltage / current to the corresponding charging terminal.

B. The controller automatically recognizes the battery type of the electric vehicle connected to the charging terminal and presents the possible charging voltage / current to the user (for example, the display unit 250) and the user inputs the corresponding number (for example, the user recognizer 220 ) Key-in or separate input device is installed in the keypad used as) and the charging power selector supplies the corresponding voltage / current.

C. When the controller automatically recognizes the battery type and selects a charging voltage / current that satisfies a predetermined target function (minimum cost, minimum time, etc.) among the applicable charging voltage / current methods, the charging power selector selects the selected voltage / current. supply.

The controller can obtain information about the electric vehicle battery system from the electric vehicle through communication ports specified in the IEC 61851-1 standard connector and the SAE J1772 standard connector connected to the charging terminal.

Scheduling Charging Time for Electric Vehicles to Reduce Power Bills

In Korea, the late-night electricity rates are cheaper than other time zones. Electric Vehicles These discounted electricity rates can be used to charge electric vehicles.

The user can save the charge by setting the charging start time, the forced stop time to stop charging even when the battery is not fully charged, or by simply entering a command to use only discounted power. It becomes possible.

Charging status monitoring

The controller 230 detects at least one or more of the temperature, current, voltage, disconnection of the charging wire, short circuit of the charging terminal, electric vehicle battery charging status, bad connector contact, and disconnection of the connector, before charging starts and during charging. The operation state of the charging terminal including the state of the electrical connection of the 210 and the electric vehicle can be monitored and it can be determined whether the charging starts or continues.

As described above, the charging terminal can obtain information about the electric vehicle battery system from the electric vehicle through communication ports according to standard methods such as the IEC 61851-1 standard connector and the SAE J1772 standard connector.

The controller is connected to the charging terminal, including disconnection / leakage of the charging circuit, poor contact and disconnection of the connector, charge state of the battery charge, temperature of the charging terminal (overheating), overcurrent, control by the self-diagnosis and the control terminal of the charging terminal. Check for faults.

Since such inspections can be easily performed from the functions that industrial commercial breakers and chargers usually have, the specific technique for performing them is not specifically described.

In particular, poor connector contact and disconnection of the connector can be recognized by mechanical or electrical switch contact or voltage abnormality in the charging terminal.

Circuit break, short circuit, connector contact failure, secondary battery buffer, overheating of charging terminal, overcurrent, abnormal voltage (overvoltage, undervoltage, voltage fluctuation), etc. If this is confirmed, the controller 230 generates a warning signal according to the display unit 250 of the charging terminal as a sound, a character, a symbol, and the like, and does not proceed with charging.

In addition, the control unit transmits this information to the central management server 150 so that the central management server can reflect this in the billing and warning process described later.

The display unit may be anything as long as the display state can be recognized by the user, including an LCD panel, a flashing light, and the like.

The controller also monitors the state of charge such as disconnection / leakage of the circuit, poor connector contact, secondary battery charge, and overheating, overcurrent, and overvoltage of the charging terminal. If a short circuit, a bad connector contact, a battery charge, an overheat, an overcurrent, or an abnormal voltage is confirmed, the controller stops charging and transmits an event signal to the central management server. In addition, the information corresponding to the display unit 250 may be displayed.

Charging status alarm

The charging terminal may display the charging state information on the display unit 250. An additional function of transmitting the charging status information to the user may be used.

The controller transmits the charging status information of each charging terminal to the central management server, the central management server checks the user corresponding to the user received from the controller through the wall pad server 162 in the user database, and the corresponding The information display terminal 420 such as a wall pad 410 or a speaker installed in the customer can be displayed as an image, text or sound. As described above, the communication between the wall pad server and the wall pad may be used in any of the wired and wireless methods, and the selection of the communication method is merely a selection of known technology.

In addition, the central management server may check the information stored in the user database through the external communication server 163 and transmit the information on the state of charge to the communication terminal (cell phone, etc.) of the user.

That is, when the charging is stopped due to a problem in the electrical connection such as disconnection of the connector during the charging, an electrical short circuit, overheating / overcurrent, or the like, the battery is notified to the user so that the user can respond to it.

Billing

The controller receives meter reading data of the amount of power used from the start of charging to the stop of charging through the power meter 211 and transmits it to the central management server 150.

The central management server stores data on the charging terminal ID, user information, abnormality occurrence information, power consumption, etc. in the database of the charging server 160. The billing server 160 performs billing for each user by using user information, abnormality occurrence information, and power consumption data.

Accordingly, the charging fee of the electric vehicle may be notified or separately notified with water, gas, heating, and hot water for each user, and the billing sum period may be arbitrarily selected.

Integrated information input terminal

In the above embodiment, although the user recognizer and the user command input device are disclosed separately installed in each charging terminal, it is also possible to install and configure one integrated information input terminal in the control unit for controlling the plurality of charging terminals.

Degree. Referring to 5, the information input terminal 280 is coupled to the controller, and the user inputs user information through the user recognizer 220 included in the information input terminal 280, and charges to be used among a plurality of charging terminals. By selecting a terminal, the information of the corresponding charging terminal (eg, charging terminal number) is input to the controller through the information input device 281.

Information related to the user recognition operation (for example, authentication rejection, authentication confirmation, input information confirmation, etc.) is displayed on the information display unit 282 of the information input terminal 280.

The controller authenticates the user through the central management server as described above, and controls the charging power selection unit to supply power to the corresponding charging terminal when the user authentication is made. The rest of the operations can be performed in the same manner as in the other embodiments.

The electric vehicle charging remote meter reading system according to the present invention is able to identify the user in the parking lot in the building and the like to charge the electric vehicle, and perform the automatic charging for the power consumption per user, the electric vehicle charging fee for each user, Integrate with existing bills, such as gas and heating, and make it possible to report or individually.

When an abnormal state is detected while charging an electric vehicle, charging is automatically stopped and the vehicle's charging status information is transmitted to the wall pad and the user terminal, so that the user can check the charging state of the electric vehicle in real time and cope with it. Can be obtained.

1: Conventional remote meter reading system

Fig. 2: Conventional remote meter reading system

Figure 3: Electric vehicle charging remote meter reading system according to the present invention

Fig. 4: Electric vehicle charging remote meter reading system according to the present invention

Fig. 5: Electric vehicle charging remote meter reading system according to the present invention

* Explanation of symbols for the main parts of the drawings

100: conventional remote meter reading system

110: water meter

113: gas meter

114: power meter

120: communication terminal block

121: integrated meter reading device

130: repeater

150: central server

160: billing server

162: wall pad server

163: external communication server

200: Charging Terminal

210: charging port

220: user recognizer

230: controller

240: communication unit

250: display unit

260: sensor

270: charging power selector

280: information input terminal

281 information input device

282 information display unit

410: wall pad

420: user terminal

Claims (10)

A plurality of charging terminals for charging an electric vehicle; And a controller for controlling a plurality of charging terminals, a central management server in communication with the controller, and a charging power selection unit for supplying charging power to the plurality of charging terminals. The charging terminal comprises a user recognizer for recognizing user information and a connector coupled with the charging connector of the electric vehicle; The controller transmits the user information input to the user recognizer to the central management server, and receives the user authentication information that determines whether the user is a valid user from the central management server, the user information is only received when valid user authentication information is received. Controlling to start charging in the input charging terminal; The central management server includes a billing server for calculating an electric vehicle charging fee for each user by using user information and power usage information transmitted from the controller; Electric vehicle charging remote meter reading system comprising a. The electric vehicle charging remote meter reading system of claim 1, wherein the charging terminal further comprises a display unit which displays information selected by a controller. The electric vehicle charging remote meter reading system of claim 1, wherein the charging power selecting unit supplies a voltage selected according to a command of the controller to a charging terminal designated by the controller. 2. The apparatus of claim 1, further comprising: temperature, current, voltage of a charging terminal or a control unit (including a controller and a charging power selection unit); Disconnection or leakage of wiring electrically connected to the charging terminal; Electric vehicle battery charge status; Bad connector contact, disconnected connector; An electric vehicle charging remote meter reading system, characterized in that it comprises a sensor for detecting at least one state of the. The method of claim 4, wherein the controller The state of charge of the electric vehicle battery; The temperature, current, voltage; Disconnection or leakage of wiring electrically connected to the charging terminal; Bad connector contact, disconnected connector; Whether the charging terminal or the controller is overheated, overcurrent or abnormal voltage occurs; And failure information of the controller or the charging terminal by the self-check; Electric vehicle charging remote meter reading system characterized in that the transmission of the at least one or more information selected from the group comprising a display to the central management server or the display unit of the charging terminal. The battery pack of claim 4, wherein the controller comprises: a buffer of a battery of an electric vehicle connected to a charging terminal before or during charging; Disconnection, leakage of wiring electrically connected to the charging terminal; Bad connector contact, disconnected connector; The electric vehicle charging remote meter reading system, characterized in that the charging does not proceed if one or more of the state of the overheating, overcurrent, abnormal voltage generation of the charging terminal or the control unit and the failure of the charging terminal or the control unit. The wall pad of claim 5, wherein when the central management server receives the at least one information, the central management server selectively receives the at least one information through a wall pad server. An electric vehicle charging remote meter reading system, characterized in that displayed on the image, text or sound or transmitted to the user terminal through an external communication server. The method according to any one of claims 1 to 7, wherein the user recognizer is formed in an information input terminal combined with a controller, and the information input terminal receives the user information and the desired charging terminal information from the user and transmits the information to the controller. An electric vehicle charging remote meter reading system. The charging power according to any one of claims 1 to 7, wherein the controller receives the charging start time and / or the charging forced end time, so that the charging operation can be performed only during the time from the charging start time to the charging forced end time. An electric vehicle charging remote meter reading system, characterized in that for controlling the selection unit or controlling the charging power selection unit to be able to perform the charging operation only during the discount power rate time period information stored in the controller or the central management server. The method of claim 8, wherein the controller receives the charge start time and / or the forced charge end time to control the charging power selection unit to perform the charging operation only during the time from the charging start time to the charging forced end time, or the controller or An electric vehicle charging remote meter reading system, characterized in that for controlling the charging power selection unit to be able to perform the charging operation only during the discount power rate time period information stored in the central management server.

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