KR20130104236A - Portable charging device for charging electric vehicle through simplified charging vending machine - Google Patents

Abstract

PURPOSE: A portable connection device for charging an electric vehicle through simplified vending machine type charging equipment improves the economical efficiency of a service by facilitating the supply of power and payment. CONSTITUTION: A first charge cable is connected to a charge power feeder (110). A second charge cable is connected to an electric vehicle (130). A communication unit includes a wireless local area communication module and a mobile communication module. A control unit transmits a unique identifier to the charge power feeder. The control unit supplies power to the electric vehicle. [Reference numerals] (110) Charge power feeder; (120) Connection device; (130) Electric vehicle; (140) User device; (150) Central management system (customer management, operation, payment); (160) Payment server such as that of a card company; (AA,BB) Charging cable; (CC) Wired/wireless communication; (DD,EE) Network

Description

Portable Charging Device for Charging Electric Vehicle through Simplified Charging Vending Machine}

The present invention relates to a charging device for an electric vehicle, and to simplify as much as possible so that the bending machine-type charging facility has a configuration for minimal authentication and power supply / blocking, and is authenticated by a near field communication with the charging facility through a portable connection device. The present invention relates to a portable connection device for charging an electric vehicle that can supply electric power to a vehicle and perform a payment without worrying about theft of power through re-authentication with a central management system and mobile communication such as 3G, WiBro, and LTE.

In order to charge a battery of an electric vehicle, a bending machine-type charging facility is equipped with various control devices for power control, power calculation, payment, maintenance, and the like. Connected charging cable to the electric vehicle and allowed to charge the battery as much as the allowed power.

As such, the existing bending machine type charging equipment is combined with a payment system, which is complicated and expensive, so that it is not suitable for installation and operation in a limited space in the city, and it is difficult for anyone to run an electric vehicle charging business. In addition, the economic burden due to the cost of installing and maintaining various control systems and charging cables, etc. is relatively large, and there is a problem that the spread may be delayed.

Accordingly, the present invention is to solve the above problems, the object of the present invention is to simplify as much as possible so that the bending machine-type charging facility has a configuration for the minimum authentication and power supply / cut off, the power theft through a portable connection device It is to provide a portable connection device for charging an electric vehicle that can power and make an electric vehicle through authentication without concern.

First, to summarize the features of the present invention, according to one aspect of the present invention for achieving the object of the present invention, the portable connection for charging the electric vehicle for charging the battery of the electric vehicle by supplying the power of the charging power supply An apparatus comprising: a first charging cable for connecting to a charging power supply and a second charging cable for connecting to an electric vehicle; A communication unit including a wireless local area communication module and a mobile communication module; And a central management system for transmitting a unique identifier to the charging power supply through the wireless local area communication module, receiving an activation response from the charging power supply through the wireless local area communication module, and connected to a network through the mobile communication module. Requesting power through the wireless short-range communication module according to the corresponding authentication by transmitting an authentication code to the power supply, and supplying power supplied by the charging power supply to the electric vehicle through the first charging cable and the second charging cable; It includes a control unit.

The control unit may provide a screen for querying a prepaid payment or a postpaid payment on a display unit according to the activation response, and the authentication code provided by the central management system upon completion of the prepaid payment or selection of the postpaid payment. Received through the mobile communication module and input for the authentication.

The central management system may directly transmit the authentication code to the controller, or when the central management system transmits the authentication code to a user's mobile terminal, the central management system may transmit the authentication code to the controller through the mobile communication module.

The prepaid payment may be made through a user's account information, credit card information, or SIM information of a user's mobile terminal to make a payment with the approval of an electronic payment system interworking with a network.

The controller calculates the amount of power supplied from the charging power supply to the electric vehicle from the start of charging to the end of charging, and transmits information on the amount of power to the central management system managing the registered customer and the connected device. The central management system may process the corresponding postpaid payment.

The controller supplies the prepaid payment amount, the amount of power required for charging according to the prepaid payment amount, the amount of power charged from the charging power supply to the electric vehicle, and the charging power supply from the charging power supply to the electric vehicle from the start of charging to the end of charging. The total amount of power is provided on the screen of the display unit, and the information provided on the screen of the display unit may be transmitted to the mobile terminal of the user who cooperates through the mobile communication module.

The first charging cable may include a separate first communication line for communication with the charging power supply, or the second charging cable may include a separate second communication line for communication with the electric vehicle. The first communication line and the second communication line may be communication lines for standard controller area network (CAN) communication.

When the first charging cable includes a separate first communication line for communication with the charging power supply, or when the second charging cable includes a separate second communication line for communication with the electric vehicle, the first The control unit provides on the screen of the display unit supplyable information including a supply voltage and a supply current received from the charging power supplier through a communication line, or battery remaining amount information receiving the second communication line from the electric vehicle. It can also be sent to the mobile terminal.

According to the portable connection device for charging an electric vehicle according to the present invention, the bending machine type charging facility, that is, the charging power supply has been simplified as much as possible to have only minimal authentication and a configuration for supplying / blocking power. By activating the portable connection device and re-authenticating with the central management system and mobile communication such as 3G, WiBro, and LTE, it is possible to supply electric vehicles and make payments without worrying about theft of power. Instead of charging equipment, low-cost, small charging equipment can be safely used to improve the economics of charging service and spread the charging stations in many places to increase the speed of charging equipment, which is an obstacle to the spread of electric vehicles.

In addition, operators (SOHO / building owners, etc.) who install and hold charging facilities can profitably by installing and operating unmanned low-cost filling facilities similarly to the installation of general vending machines instead of large expensive charging facilities. The operator can charge and collect charges for each charging facility, and a certain amount of fee is paid from the charging facility operator, so that the operator can not spend unnecessary administrative expenses. In addition, the electric vehicle user can avoid the waste of waiting time and the risk of running the vehicle due to the lack of charging facilities and management failure, and at the same time, various electric vehicles in connection with the car sharing business. It can contribute to the expansion of business.

1A and 1B are diagrams for describing a portable connection device for charging an electric vehicle according to an embodiment of the present invention.
2 is a view for explaining an electric vehicle charging system including a connection device according to an embodiment of the present invention.
3 is a view for explaining in more detail the operation of the charging power supply, the connecting device, and the electric vehicle of FIG.
4 is a flowchart illustrating an operation of an electric vehicle charging system including a connection device according to an embodiment of the present invention.
FIG. 5 is a diagram for describing display interworking between a connection device and a user terminal of FIG. 1.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Reference will now be made in detail to the preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the like elements throughout.

In particular, the electric vehicle mentioned below may be not only a passenger car, but also a van, a bus, a truck, a trailer, other special vehicles, etc., regardless of the size of the vehicle, and in some cases, along with fossil fuels such as gas, gasoline, and diesel, It may be a hybrid car that can operate using the power of.

1A and 1B are diagrams for describing a portable connection device for charging an electric vehicle according to an embodiment of the present invention.

1A and 1B, the portable connection device for charging an electric vehicle according to an embodiment of the present invention (see 120 of FIG. 2) is a bending machine as simplified as possible to have only a configuration for minimal authentication and power supply / disconnect. Type charging facilities, i.e., charging cables to be connected to the charging power supply (see 110 in FIG. 2) and the electric vehicle (see 130 in FIG. 2), respectively. The plug of the charging cable to be coupled to each socket of the charging power supply (see 110 in FIG. 2) and the electric vehicle (see 130 in FIG. 2) consists of two terminals to be simply connected to each AC or DC power line as shown in FIG. In some cases, in addition to the two terminals to be connected to each AC or DC power line as shown in Figure 1b may be further provided with other terminals to be connected to the terminal for the controller area network (CAN) communication.

Such a portable connection device for charging an electric vehicle according to an embodiment of the present invention is configured to be conveniently carried by a user, and a bending machine type charging facility, that is, a charging power supply (see 110 of FIG. 2) is installed and operated. Wherever and whenever, the user can connect his electric vehicle with the charging power supply (see 110 of FIG. 2) and charge the battery of the electric vehicle through payment according to a predetermined policy.

2 is a view illustrating an electric vehicle charging system 100 including a portable connection device 120 for charging an electric vehicle according to an embodiment of the present invention.

2, the electric vehicle charging system 100 according to an embodiment of the present invention, the bending machine-type charging facility, that is, the charging power supply as simplified as possible to have only the configuration for the minimum authentication and power supply / cut off 110, the connection device 120, the electric vehicle 130, the mobile terminal 140 of the user on the network, the central management system 150 on the network, and the payment server 160 on the network.

Here, the network includes a wireless mobile communication network, such as 3G (including WCDMA, GSM, WiFi), WiBro, LTE, and wired Internet, and the charging power supply 110 or the connection device 120 is a mobile terminal 140 through the network. ), The central management system 150, the payment server 160, such as a device, a server, a terminal, a system necessary for the operation of the charging system 100 can be communicated.

In particular, the connection device 120 according to an embodiment of the present invention, the wireless power (110) and the wireless LAN (WiFi, etc.), ZigBee, Bluetooth, or NFC (Near Field Communication) communication such as near field communication The mobile terminal 140, the central management system 150, and the payment server 160 may communicate with each other through the above network.

The central management system 150 manages the information about the registered customer (user) and the connection device 120 in a database to use the charging service of the present invention, and may be a server of a telecommunication company, and performs postpaid payment processing. can do. For example, the central management system 150 is information about the user and information about the connection device 120 used by the user, such as a user name, address, a terminal identifier such as a telephone number of the mobile terminal 140, the connection device ( Information about the unique identifier and the like of 120 may be managed in a database for each user. The unique identifier of the connection device 120 may be a Media Access Control (MAC) address, an Internet Protocol (IP) address, or the like, and may be updated in the power control unit 111 of FIG. Can operate. Prepaid payment processing for the use of the charging service is linked to an electronic payment system such as payment server 160 on the network in accordance with the user's account information, credit card information, or SIM (Subscriber Identity Module) information of the user mobile terminal 140 The payment can be made.

Here, the charging power supply 110 does not necessarily need to be connected to the central management system 150 through a network. For simplicity and economical operation of the charging power supply 110, the central management system 150 and the network are connected. It may not be possible to connect. At this time, the charging power supply 110 itself is connected to the power control unit 111 of FIG. 3 to authenticate for activation of the power control unit 111 of FIG. 3. (Internet Protocol) Information about a unique identifier such as an address can be managed in a predetermined storage means.

The user's mobile terminal 140 is a smart phone, cellular phone, PCS phone (PCS phone: Personal Communications Services phone) to communicate via the above network, synchronous / asynchronous IMT-2000 (wireless communication) Portable or mobile terminal such as Mobile Telecommunication-2000), Personal Digital Assistant (PDA), Wireless Application Protocol Phone (WAP phone), Mobile Play-station, Other Portable Multimedia Player (PMP) In some cases, it may include a variety of electronic devices or devices throughout the home or enterprise society that can communicate with a notebook PC, desktop PC, Palm Personal Computer (PLM) or the like or other electronic devices.

In the present invention as described above, the bending machine-type charging facility, that is, the charging power supply 110 is simplified as much as possible to have only the configuration for the minimum authentication and power supply / cut off, as described below, the charging power supply 110 is connected to the connection device The device 120 is activated by authenticating a unique identifier through wireless short-range communication with the connection device 120, and the connection device 120 is reconfigured to a mobile communication system such as 3G, WiBro, LTE, and the central management system 150 without worrying about theft of power. Power can be supplied to, and such a charging service may be made through the corresponding prepaid or postpaid payment. Accordingly, it is possible to safely use the charging power supply 110, which is a low-cost, small charging facility, instead of the existing high-cost, large charging facility, thereby improving the economics of the charging service and spreading the installation place of the charging power supply 110 in many places. There was no difficulty in the supply of charging equipment, which is an obstacle of the supply of the car 130.

First, referring to FIG. 3, the operation relationship between the charging power supply 110, the connection device 120, and the electric vehicle 130 will be briefly described.

The charging power supply 110 includes a power control unit 111 and a communication module 112, and the power control unit 111 controls supply or interruption of AC or DC power at the request of the connecting device 120, and centrally. A unique identifier (MAC address, IP address, etc.) for the user's connection device 120 registered in the management system 150 may be stored in a predetermined storage means for use in the activation request of the connection device 120. The communication module 112 may include a wired / wireless communication module for communicating with the central management system 150 on the network, and a module for wireless local area communication with the connection device 120.

The electric vehicle 130 may include a battery 132 to be charged, and may further include a battery management system (BMS) 133 for managing a charging state of the battery 132. In addition, a charging circuit 131 for supplying the battery 132 by appropriately converting AC or DC power supplied from the charging power supply 110 may be included as necessary. The charging circuit 131 may include a circuit for controlling the conversion of AC power into DC power, or controlling the charging speed (complete).

The connection device 120, in addition to a charging cable (first charging cable) for connecting to the charging power supply 110 and a charging cable (second charging cable) for connecting to the electric vehicle 130, the control unit 121, the display The unit 122, the communication unit 123, and button (s) 124 for inputting various data may be included. The function of the button (s) 124 for power request, data transmission, confirmation, etc. may be performed on the touch screen of the display 122. In addition, the connection device 120 is often used outdoors because of the nature for charging the electric vehicle, in order to prevent the malfunction due to damage in case of rain or the display unit 122, such as LCD module is separated from the It is possible to make it possible. For example, the connector 120 may be provided with a predetermined connector, and the display unit 122 may be mounted or detached from the connector to be used. Even when the display unit 122 is separated, all functions displayed on the display unit 122 may be displayed on the user's mobile terminal 140 as described below, and are connected through the remote control required by the mobile terminal 140. The device 120 may perform an operation for the required function.

The communication unit 123 is a module (wireless local area communication module) for wireless short-range communication (wireless LAN (WiFi, etc.), Zigbee, Bluetooth, NFC, etc.) and the mobile terminal 140 on the network , A central management system 150, or a payment server 160 and a module (mobile communication module) for performing wireless mobile communication such as 3G (including WCDMA, GSM, WiFi), WiBro, and LTE. As described above, a charging cable (first charging cable) for connecting to the charging power supply 110 and a charging cable (second charging cable) for connecting to the electric vehicle 130 may include two strands for power supply. The power line may have a corresponding plug at its end (see FIG. 1A), or a communication line for communication with the power line and standard controller area network (CAN) and at its ends may correspond to the charging power supply 110 and the electric vehicle 130. It may have a plug to be connected to the terminals of the connecting socket (see FIG. 1B).

The controller 121 is responsible for the overall control of the components of the connection device 120 as described above. The control unit 121 may transmit a unique identifier in communication with the charging power supply 110 through a wireless short-range communication module of the communication unit 123 to activate the charging power supply 110 and receive a corresponding activation response. Sending the authentication code to the central management system 150 connected to the network through the mobile communication module of 123 to request power through the wireless short-range communication module according to the corresponding authentication, accordingly the charging power supply 110 to supply Power may be supplied to the electric vehicle 130 through the first charging cable and the second charging cable.

The controller 121 may perform the above charging service by prepaid payment or postpaid payment processing, and displays status information of the display unit 122 during the charging service such as the amount of power charged and the remaining amount of the battery 132. It may be displayed on the LCD screen, part or all of the information displayed through the display unit 122 may be transmitted to the mobile terminal 140 of the user to be displayed in conjunction with the screen of the mobile terminal 140 ( See FIG. 5). In addition, the information displayed through the display unit 122 is not only displayed on the mobile terminal 140, but also according to the information displayed on the mobile terminal 140. The information is transmitted to the control unit 121 of the connection device 120 to perform an operation corresponding to the function of the button (s) 124 or the touch screen function for inputting various data for the operation of the 120. Can be. For example, as described below, an input of an authentication code, a command such as a charging start, etc. may be transmitted from the mobile terminal 140 to the connection device 120 remotely so that the corresponding function may be operated.

Hereinafter, the operation of the electric vehicle charging system 100 including the connection device 120 according to an embodiment of the present invention will be described in more detail with reference to the flowchart of FIG. 4.

The user carries the connection device 120 while driving the electric vehicle 130, and checks the remaining battery level of the instrument panel of the electric vehicle 130, and when the battery 132 needs to be charged, the charging power supply installed everywhere Where there is 110, connect the plug of one first charging cable of the connection device 120 to the corresponding socket of the charging power supply 110, and the plug of the other second charging cable of the electric vehicle 130 It is connected to the socket (S10, S11).

As such, when the charging cable of the connection device 120 is connected to the charging power supply 110 and the electric vehicle 130, the control unit 121 of the connection device 120 is a wireless local area communication module (eg, the communication unit 123). Send a unique identifier (MAC address, IP address, etc.) to the charging power supply 110 via a wireless LAN (WiFi, Zigbee, Bluetooth, NFC, etc.), and thus the charging power supply 110 is a communication module Receives a unique identifier (MAC address, IP address, etc.) through the 112, and the registered information (unique identifier, etc.) of the customer (user) or the connection device 120 is maintained by the power control unit 111 and the received unique Authentication is performed to determine whether the identifiers match, and upon successful authentication, the power control unit 111 is activated to prepare for charging (S20). When the power control unit 111 is activated, an activation response is transmitted to the control unit 121 of the connection device 120 through wireless short-range communication of the communication module 112 in order to notify the authentication (S21).

 Accordingly, the control unit 121 of the connection device 120 that receives the activation response through the wireless local area communication module of the communication unit 123 may provide a screen for querying the prepayment or postpaid payment to the display unit 122 accordingly. (S30), the central management system 150 by receiving and inputting the authentication code provided from the central management system 150 through the mobile communication module of the communication unit 123 according to the completion of the prepaid payment or the selection of the postpaid payment. ) Authentication again (S31 to S35).

 The controller 121 may perform the charging service by prepaid or postpaid payment processing, and displays the above state information during the charging service such as the amount of power charged and the remaining amount of the battery 132. It may be displayed on the LCD screen, while some or all of the information displayed through the display unit 122 is transmitted to the mobile terminal 140 of the user while a predetermined application driven in the mobile terminal 140 of the user is executed. In addition, the information displayed on the display unit 122 of the connection device 120 may be displayed in conjunction with the screen of the mobile terminal 140 (see FIG. 5).

On the display unit 122 screen of the connection device 120 linked as described above, or the selection screen of prepaid payment or postpaid payment on the screen of the mobile terminal 140, for example, when the user selects prepaid payment, a prepaid payment process is performed. A prepaid payment can be performed on the screen (S31). Prepaid payment processing for the use of the charging service, the user's account information, credit card information, or SIM (Subscriber Identity Module) information of the user mobile terminal 140, together with the prepaid payment amount required for the user to charge on the prepaid payment processing screen Etc., the payment may be made through interworking with an electronic payment system such as payment server 160 on the network. When the prepaid payment process is completed in this manner, the payment server 160 transmits the corresponding approval or payment completion information to the connection device 120 or the mobile terminal 140, and accordingly, the control unit 121 of the connection device 120. Alternatively, the mobile terminal 140 may request a verification code by transmitting a message related to the payment completion to the central management system 150 through the network (S32). Here, when the payment is completed by the account transfer to the deposit account managed by the central management system 150, the connection device 120 or the mobile terminal 140 transmits a message related to the payment completion to the central management system 150 The process can be omitted.

In addition, on the display 122 screen of the connection device 120 linked as described above, or the selection screen of prepaid payment or postpaid payment on the mobile terminal 140 screen, for example, when the user selects a postpaid payment, The control unit 121 or the mobile terminal 140 of the device 120 may directly request the authentication code to the central management system 150 through the network (S33).

As such, the central management system 150 that receives the message related to the payment completion according to the prepaid payment processing or the request for the authentication code according to the selection of the postpaid payment, the central management system 150 directly connects the corresponding authentication code to the control unit 121 of the connection device 120 or The mobile terminal 140 transmits to the mobile terminal 140 (S34), and thus the connection device 120 or the mobile terminal 140, which is received through the mobile communication module, is displayed on the reception screen, and the user receives the received authentication code for authentication. Whether the authentication code issued by the central management system 150 by inputting the screen and thereby transmitting the input authentication code from the control unit 121 or the mobile terminal 140 of the connection device 120 to the central management system 150 Request for authentication (S35). Accordingly, the central management system 150 performs authentication on the corresponding authentication code and transmits an authentication completion message to the connection device 120 or the mobile terminal 140 (S35). When the authentication completion message is received by the mobile terminal 140, it may be transmitted to the control unit 121 of the connection device 120. In step S34 as described above, the central management system 150 may transmit the authentication code to the control unit 121 of the connection device 120, if necessary, the central management system 150 transmits the authentication code to the user's mobile terminal 140 ) May be transmitted from the mobile terminal 140 to the connection device 120 to be received by the control unit 121 through the mobile communication module of the connection device 120 to perform an authentication request in step S35.

After the authentication of the activation of the charging power supply 110 and the authentication of the central management system 150 according to the authentication process of the central management system 150 again, the user presses a button 124 or the like or the corresponding touch screen By touching the screen, the control unit 121 of the connection device 120 may request power through the wireless local area communication module of the communication unit 123 (S40). Accordingly, by receiving the wireless short-range communication method of the communication module 112 in the charging power supply 110 and the power control unit 111 to start the power supply (S41), the connection device 120 is electrically connected through the charging cable The battery 132 may be charged by supplying power to the vehicle 130 (S42).

When charging is started as described above, the control unit 121 of the connection device 120 calculates the amount of power supplied from the charging power supply 110 to the electric vehicle 130 from the start of charging to the end of charging (S44). Is displayed on the display unit 122 (S45), and after completion of charging (S46) to notify the power control unit 111 of the charging power supply 110 to complete the charging (S47) to cut off the power (S48). In addition, after the charging is completed (S46), the control unit 121 of the connection device 120 is a central management system 150 for managing the connection device 120 and the customer registered information on the amount of charging power from the start of charging to the end of charging By transmitting to the central management system 150 may be to handle the corresponding postpay payment (S50). The central management system 150, which receives the information on the amount of charging power from the connection device 120 with a unique identifier (MAC address, IP address, etc.), charges the bill (e.g., the central management system) corresponding to the telephone number for the corresponding customer. Post-payment processing (if operated by the telecommunications company) or other dedicated billing invoices.

As shown in FIG. 5, by the processing of the control unit 121 of the connection device 120, the prepaid payment amount, the amount of charge required according to the prepaid payment amount, the electric vehicle 130 from the charging power supply 110. ), The total amount of power charged to the electric vehicle 130 from the charging power supply 110 to the screen of the display unit 122 from the start of charging to the end of charging, and the mobile communication of the connection device 120 The charging service process may also be displayed in the mobile terminal 140 by transmitting information provided on the screen of the display unit 122 to the mobile terminal 140 of the user who cooperates with the module.

In addition, as shown in FIG. 1B, when the charging power supply 110, the connection device 120, and the electric vehicle 130 are connected to each other by a communication line for a separate CAN (Controller Area Network) communication included in a charging cable in addition to a power line, The controller 121 of the connection device 120 may be provided on the screen of the display unit 122 to provide supply information including supply voltage and supply current received from the charging power supply 110. The information may also be transmitted to 140 to provide corresponding information. In addition, at this time, the remaining amount of battery information received from the battery management system (BMS) 133 of the electric vehicle 130 may be displayed on the screen of the display unit 122 of the connection device 120. It may be provided and may also be transmitted to the mobile terminal 140 so that the corresponding information may be displayed (S43).

As described above, the present invention has been described by way of limited embodiments and drawings, but the present invention is not limited to the above embodiments, and those skilled in the art to which the present invention pertains various modifications and variations from such descriptions. This is possible. Therefore, the scope of the present invention should not be limited to the described embodiments, but should be determined by the equivalents of the claims, as well as the claims.

Charging power supply (110)
Connector (120)
Electric Vehicles (130)
User terminal 140
Central Management System (150)
Billing server (160)

Claims (9)

In the portable connection device for charging an electric vehicle for supplying power of the charging power supply to charge the battery of the electric vehicle,
A first charging cable for connecting to a charging power supply and a second charging cable for connecting to an electric vehicle;
A communication unit including a wireless local area communication module and a mobile communication module; And
The unique identifier is transmitted to the charging power supplier through the wireless local area communication module, the activation response from the charging power supply is received through the wireless local area communication module, and is connected to a central management system connected to a network through the mobile communication module. The control unit transmits an authentication code to request power through the wireless short-range communication module according to the corresponding authentication, and supplies power supplied by the charging power supply to the electric vehicle through the first charging cable and the second charging cable.
Portable connection device for charging an electric vehicle comprising a. The method of claim 1,
The controller provides a screen for querying a prepaid payment or a postpaid payment on a display unit according to the activation response.
And receiving the authentication code provided from the central management system through the mobile communication module according to the completion of the prepaid payment or the postpaid payment. The method of claim 2,
The central management system directly transmits the authentication code to the control unit, or when the central management system transmits the authentication code to a user's mobile terminal, the mobile terminal transmits the authentication code to the controller through the mobile communication module. Portable connection for charging electric vehicles. The method of claim 2,
The prepaid payment is performed through the user's account information, credit card information, or SIM information of the user's mobile terminal to make the payment with the approval of the electronic payment system interworking with the network. . The method of claim 2,
The control unit calculates the amount of power supplied from the charging power supply to the electric vehicle from the start of charging to the end of charging,
And transmitting the information on the amount of power to the central management system that manages the registered customer and the connection device, and the central management system processes the corresponding postpaid payment. The method of claim 1,
The controller supplies the prepaid payment amount, the amount of power required for charging according to the prepaid payment amount, the amount of power charged from the charging power supply to the electric vehicle, and the charging power supply from the charging power supply to the electric vehicle from the start of charging to the end of charging. And providing the total amount of power to the screen of the display unit, and transmitting the information provided on the screen of the display unit to a mobile terminal of a user interworking through the mobile communication module. The method of claim 1,
The first charging cable includes a separate first communication line for communicating with the charging power supply, or the second charging cable includes an additional second communication line for communicating with the electric vehicle Portable portable connection device. The method of claim 1,
And the first communication line and the second communication line are communication lines for standard controller area network (CAN) communication. The method of claim 1,
When the first charging cable includes a separate first communication line for communication with the charging power supply, or the second charging cable includes a separate second communication line for communication with the electric vehicle,
The control unit provides supply information including supply voltage and supply current received from the charging power supplier through the first communication line, or battery level information receiving the second communication line from the electric vehicle, on the screen of the display unit. And transmitting to the mobile terminal.

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