KR102432038B1 - In-cable control box mounted in electric vehicle charging cable and method for charging electric vehicle using the same - Google Patents

Abstract

Disclosed is an In-Cable control box mounted on an electric vehicle charging cable for connecting to a power socket to perform wired electric vehicle charging. The incable control box includes at least one processor, a first communication module that collects information of the electric vehicle by performing communication with an EVCC (Electric Vehicle Communication Controller) mounted on the electric vehicle, and the first communication module collected from the A second communication module for transmitting information of an electric vehicle to a Supply Equipment Communication Controller (SECC) and a memory for storing instructions instructing the at least one processor to control the first communication module and the second communication module (memory) included. Therefore, it is possible to perform electric vehicle charging that is economical and compatible with standard technologies.

Description

IN-CABLE CONTROL BOX MOUNTED IN ELECTRIC VEHICLE CHARGING CABLE AND METHOD FOR CHARGING ELECTRIC VEHICLE USING THE SAME

The present invention relates to an in-cable control box mounted on an electric vehicle charging cable and a method for charging an electric vehicle using the same, and more particularly, to an electric vehicle charging cable including an in-cable control box equipped with a WiFi module rather than a mobile communication module. It relates to a method of charging an electric vehicle using

An electric vehicle charging system can be basically defined as a system that charges a battery mounted in an electric vehicle using power from a commercial power grid or energy storage device. Such an electric vehicle charging system may have various forms depending on the type of electric vehicle. For example, the electric vehicle charging system may include a conductive charging system using a cable or a non-contact wireless power transmission system.

The electric vehicle charging system of the conductive charging method connects the inlet of the vehicle and the charging stand using the charging cable connected to the connector, and charges the alternating current (AC) power of the charging stand to the battery through the vehicle's on-board charger. is composed

In addition, the electric vehicle charging system of the conductive charging method is configured to connect the inlet of the vehicle and the off-board charger using a fast charging cable to which the connector is connected, and to charge the direct current (DC) power of the off-board charger to the battery in the vehicle.

The vehicle's Battery Management System (BMS) communicates with a charging stand or off-board charger to charge electric vehicles.

On the other hand, the existing electric vehicle charging system including a conductive charging system or a wireless power transmission system has a problem in that a user's communication cost burden increases because a separate communication network must be used for charging and settlement. In addition, for payment for electric vehicle charging, it is necessary to use a standard or universally used payment device or method, and a separate security technology must be applied to secure the payment process, which increases facility cost and complicates the use procedure There is a downside to breaking it.

An object of the present invention for solving the above problems is to provide an in-cable control box mounted on an electric vehicle charging cable.

Another object of the present invention for solving the above problems is to provide a method for charging an electric vehicle wired in a supply equipment communication controller (SECC).

Another object of the present invention for solving the above problems is to provide a power supply communication controller (SECC, Supply Equipment Communication Controller).

The present invention for achieving the above object provides an in-cable control box mounted on an electric vehicle charging cable for performing wired charging of an electric vehicle by connecting to a power socket.

Here, the incable control box includes at least one processor, a first communication module that collects information of an electric vehicle by communicating with an EVCC (Electric Vehicle Communication Controller) mounted on an electric vehicle, and the first communication module collected from the A second communication module for transmitting information of an electric vehicle to a Supply Equipment Communication Controller (SECC) and a memory for storing instructions instructing the at least one processor to control the first communication module and the second communication module may include.

Here, the incable control box may further include a power meter for accumulating and measuring the amount of power charged to the electric vehicle by wire.

Here, the first communication module may perform power line communication (PLC) communication.

Here, the second communication module may perform wireless fidelity (WI-FI) communication.

Here, PLC communication may use a communication protocol according to ISO 15118-3 or ISO 12139.

Here, WIFI communication may use a communication protocol according to ISO 15118-8.

Here, the instructions may instruct the processor to control the first communication module to perform communication connection establishment through the EVCC and the SLAC according to a signal level attention characterization (SLAC) communication connection request from the EVCC.

Here, the instructions may instruct the processor to control the second communication module, transmit a wireless communication connection request to the SECC, and receive a response message to the wireless communication connection request from the SECC.

Another aspect of the present invention for achieving the above object provides an electric vehicle wired charging method performed in a Supply Equipment Communication Controller (SECC).

Here, the electric vehicle wired charging method includes the steps of establishing a wireless communication connection with an in-cable control box (ICCB) mounted on the electric vehicle charging cable and receiving information of the electric vehicle connected to the electric vehicle charging cable, the electric vehicle included in the electric vehicle information Transmitting the identification symbol of and SECC to the server, receiving the identification symbol of the server only from the server, and transmitting the identification symbol of the server to the EVCC (Electric Vehicle Communication Controller) mounted in the electric vehicle may include.

Here, the wireless communication connection may be connected using a WIFI communication protocol according to ISO 15118-8.

Here, the electric vehicle wired charging method may further include receiving charging information according to a charging loop from the EVCC and simply transmitting the received charging information and electric vehicle information to a server.

Here, the charging information includes the amount of charging energy requested by the electric vehicle (EV Energy request), the energy reserve expected when fully charged (Full State of Charge, Full SOC), or the energy reserve amount expected at the requested charging end time (Bulk State of Charge). , Bulk SOC) may include at least one of.

Here, the information of the electric vehicle includes at least one of electric vehicle status information (EV Status), an acceptable maximum current (EV) or voltage (EV Maximum Voltage Limit), and an energy capacity that can be stored in the battery (EV Energy Capacity). may include

Here, the electric vehicle state information may include at least one of a battery energy reserve amount and a charging mode of the electric vehicle.

Here, the electric vehicle wired charging method may further include receiving a charging completion message from the EVCC and simply transmitting a settlement request message according to the charging completion message to the server.

Here, the settlement request message may include at least one of the amount of charge charged in the electric vehicle and the identification symbol of the electric vehicle.

Another aspect of the present invention for achieving the above object provides a power supply communication controller (SECC, Supply Equipment Communication Controller).

Here, the power supply communication controller is controlled by at least one processor, a memory storing instructions instructing the at least one processor to perform at least one step, and at least one processor It may include a communication module for transmitting and receiving wireless communication messages by being.

Here, the at least one step is the step of establishing a wireless communication connection with an in-cable control box (ICCB) mounted on the electric vehicle charging cable and receiving information of the electric vehicle connected to the electric vehicle charging cable, the electric vehicle included in the electric vehicle information Transmitting the identification symbol and the identification symbol of the power supply communication controller to the server, receiving the identification symbol of the server only from the server, and adding the identification symbol of the server to the EVCC (Electric Vehicle Communication Controller) mounted on the electric vehicle may include the step of transmitting to

Here, the wireless communication connection may be performed using a WIFI communication protocol according to ISO 15118-8.

Here, the instructions may instruct the processor to control the communication module to further perform the steps of receiving charging information according to a charging loop from the EVCC and simply transmitting the received charging information and information of the electric vehicle to the server. can

Here, the instructions may instruct the processor to control the communication module to further perform the steps of receiving a charge completion message from the EVCC and merely transmitting a settlement request message according to the charge completion message to the server.

When using the In-Cable control box mounted on the electric vehicle charging cable according to the embodiment of the present invention as described above and the electric vehicle wireless charging method using the same, a mobile communication module is used for external Internet connection Therefore, it is possible to reduce the communication cost borne by the user.

In addition, as international standard technology is applied, there is no need to apply additional technologies for smart charging, automatic payment, and security. Moreover, since the electric vehicle is directly connected to the Internet or cloud service while charging, it is possible to provide additional services.

In addition, there is an advantage in that it can be applied to buildings, shopping malls, and public facilities for various purposes in addition to apartment houses, so that electric vehicle charging and payment can be performed effectively.

1 is a conceptual diagram for explaining an electric vehicle wired charging method according to an embodiment of the present invention.
2 is a conceptual diagram of an environment in which an electric vehicle wired charging method according to an embodiment of the present invention is performed.
3 is a first sequence diagram of a method for wired charging of an electric vehicle according to an embodiment of the present invention.
4 is a second sequence diagram of a method for wired charging of an electric vehicle according to an embodiment of the present invention.
5 is a block diagram of an In-cable Control Box (ICCB) according to an embodiment of the present invention.
6 is a flowchart of an electric vehicle wired charging method performed by a Supply Equipment Communication Controller (SECC) according to an embodiment of the present invention.
7 is a block diagram of a Supply Equipment Communication Controller (SECC) according to an embodiment of the present invention.

Since the present invention can have various changes and can have various embodiments, specific embodiments are illustrated in the drawings and described in detail in the detailed description. However, this is not intended to limit the present invention to specific embodiments, and should be understood to include all modifications, equivalents and substitutes included in the spirit and scope of the present invention. In describing each figure, like reference numerals have been used for like elements.

Terms such as first, second, A, and B may be used to describe various elements, but the elements should not be limited by the terms. The above terms are used only for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, a first component may be referred to as a second component, and similarly, a second component may also be referred to as a first component. and/or includes a combination of a plurality of related listed items or any of a plurality of related listed items.

When a component is referred to as being “connected” or “connected” to another component, it may be directly connected or connected to the other component, but it is understood that other components may exist in between. it should be On the other hand, when it is said that a certain element is "directly connected" or "directly connected" to another element, it should be understood that the other element does not exist in the middle.

The terms used in the present application are only used to describe specific embodiments, and are not intended to limit the present invention. The singular expression includes the plural expression unless the context clearly dictates otherwise. In the present application, terms such as “comprise” or “have” are intended to designate that a feature, number, step, operation, component, part, or combination thereof described in the specification exists, but one or more other features It is to be understood that this does not preclude the possibility of the presence or addition of numbers, steps, operations, components, parts, or combinations thereof.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Terms such as those defined in a commonly used dictionary should be interpreted as having a meaning consistent with the meaning in the context of the related art, and should not be interpreted in an ideal or excessively formal meaning unless explicitly defined in the present application. does not

In an embodiment of the present invention, an electric vehicle charging system may be defined as a system that basically charges a battery mounted in an electric vehicle by using a grid of commercial power or electric power of an energy storage device. Such an electric vehicle charging system may have various forms depending on the type of electric vehicle. For example, the electric vehicle charging system may include a conductive charging system using a cable or a non-contact wireless power transmission system.

In an embodiment of the present invention, an electric vehicle (EV) may refer to an automobile defined in 49 CFR (code of federal regulations) 523.3 and the like. Electric vehicles can be used on highways and can be powered by electricity supplied from an on-board energy storage device, such as a rechargeable battery, from a power source external to the vehicle.

In an embodiment of the present invention, the power supply source may include a residential or public electric service or a generator using vehicle-mounted fuel.

In an embodiment of the present invention, an electric vehicle (EV) is an electric car, an electric automobile, an electric road vehicle (ERV), a plug-in vehicle (PV), and a plug-in (xEV). vehicle), and the like, and xEV is a plug-in all-electric vehicle or battery electric vehicle (BEV), a plug-in electric vehicle (PEV), a hybrid electric vehicle (HEV), and a hybrid plug-in electric vehicle (HPEV). ), PHEV (plug-in hybrid electric vehicle), etc. may be referred to or classified.

In an embodiment of the present invention, a plug-in electric vehicle (PEV) may be referred to as an electric vehicle that is connected to an electric power grid to recharge a quantity-loaded primary battery. A plug-in vehicle (PV) may be referred to herein as a vehicle that can be recharged through a wireless charging method without using a physical plug and socket from an electric vehicle supply equipment (EVSE). Heavy duty vehicles (H.D. Vehicles) may refer to any vehicle with four or more wheels as defined in 49 CFR 523.6 or CFR 37.3(bus).

In one embodiment of the present invention, a light duty plug-in electric vehicle is powered by an electric motor powered by a rechargeable battery or other energy device for use primarily on public streets, roads and highways. It may refer to a vehicle with three or four wheels. Lightweight plug-in electric vehicles may be specified with a total weight of less than 4.545 kg.

In an embodiment of the present invention, a utility provides electrical energy and typically includes a Customer Information System (CIS), an Advanced Metering Infrastructure (AMI), and a Rate and Revenue system. may be referred to as a set of systems including The utility makes energy available to plug-in electric vehicles through price tags or discrete events. In addition, utilities can provide information on tariff rates, intervals for metered power consumption, and validation of EV programs for plug-in EVs.

In an embodiment of the present invention, smart charging can be described as a system in which EVSE and/or plug-in electric vehicles communicate with the power grid to optimize the vehicle charging or discharging rate over time to grid capacity or cost-of-use ratio. Automatic charging may be defined as an operation of inductive charging by placing a vehicle in an appropriate position with respect to a primary charger assembly capable of transmitting power. Automatic recharging can be performed after obtaining the necessary authentication and authorization.

In an embodiment of the present invention, interoperability may refer to a state in which components of a system relative to each other can work together to perform a desired operation of the entire system. Information interoperability may refer to the ability of two or more networks, systems, devices, applications or components to share and easily use information safely and effectively with little or no inconvenience to a user. .

In an embodiment of the present invention, pairing may refer to a procedure in which a vehicle (electric vehicle) is associated with a single dedicated ground assembly (primary device) arranged to transmit power. Pairing herein may include a procedure of associating a charging spot or a specific ground assembly with a vehicle assembly controller. Correlation/Association may include a relationship establishment procedure between two peer communication entities. Command and control communication may refer to communication between an electric vehicle power supply and electric vehicle exchanging information necessary for starting, controlling, and terminating a wireless power transfer process.

In an embodiment of the present invention, high level communication may process all information exceeding the information in charge of command and control communication. The data link of the high level communication may use a PLC (Power line communication), but is not limited thereto. Low power excitation may refer to, but is not limited to, enabling the electric vehicle to detect the primary device to perform precise positioning and pairing, and vice versa.

In an embodiment of the present invention, a service set identifier (SSID) is a unique identifier consisting of 32-characters attached to a header of a packet transmitted over a wireless LAN. The SSID identifies the basic service set (BSS) to be accessed by the wireless device. SSID basically distinguishes multiple WLANs from each other. Therefore, all access points (APs) and all terminal/station devices that want to use a specific wireless LAN can use the same SSID. Equipment that does not use a unique SSID cannot join the BSS. Because the SSID is seen as plaintext, it may not provide any security features to the network.

In an embodiment of the present invention, an extended service set identifier (ESSID) is a name of a network to be accessed. It is similar to SSID, but can be a more extended concept. A basic service set identifier (BSSID) is usually 48 bits and is used to identify a specific basic service set (BSS). In the case of an infrastructure BSS network, the BSSID may be a medium access control (MAC) of an AP device. In the case of an independent BSS or an ad hoc network, the BSSID may be generated as an arbitrary value.

In an embodiment of the present invention, rapid charging may refer to a method of converting AC power of the power system into DC and directly supplying the converted DC power to a battery mounted in an electric vehicle, in which case the use voltage is about 500 V or less. Direct voltage may be used.

In an embodiment of the present invention, slow charging is a method of charging a battery mounted in an electric vehicle using AC power supplied to a general home or workplace, and through an outlet built in each home or work outlet or a separately installed charging stand. AC power is provided, and at this time, an AC voltage of 220 V may be used as a voltage to be used. In this case, the electric vehicle may further include an on-board charger, which is a device capable of boosting AC power for slow charging, converting it into DC power, and supplying it to the battery.

Hereinafter, preferred embodiments according to the present invention will be described in detail with reference to the accompanying drawings.

1 is a conceptual diagram for explaining an electric vehicle wired charging method according to an embodiment of the present invention.

Referring to FIG. 1 , the electric vehicle wired charging method is to be performed by the mutual operation of the electric vehicle charging cable 10 and at least one component of the electric vehicle 20 and the power socket 30 installed in an existing building or charging stand. can

Here, the electric vehicle 20 may be generally defined as a vehicle that supplies a current induced from a rechargeable energy storage device such as a battery as an energy source of an electric motor, which is a power device.

In addition, the electric vehicle 20 according to the present invention may include a hybrid vehicle having both an electric motor and a general internal combustion engine, and includes not only automobiles, but also motorcycles, carts, may include scooters and electric bicycles.

In addition, the electric vehicle 20 according to the present invention may include a plug connection port to charge the battery by wire. In this case, the electric vehicle 20 capable of charging the battery by wire may be referred to as a plug-in electric vehicle (PEV).

In addition, the plug connector provided in the electric vehicle 20 according to the present invention may support slow charging or support fast charging. In this case, the electric vehicle 20 may support both slow charging and fast charging through one plug port, or may include respective plug ports supporting slow charging and fast charging.

In addition, the electric vehicle 20 according to the present invention may include an electric vehicle communication controller (EVCC) inside or outside in some cases for communicating with other external devices, and using the EVCC It is possible to control wired charging by communicating with the charging stand of the or electric vehicle charging cable 10 .

In addition, the electric vehicle 20 according to the present invention may include an on-board charger to support slow charging or charging through AC power supplied from a general power system. The on-board charger may boost the AC power supplied from the outside through a wire during slow charging, convert it into DC power, and supply it to the battery built in the electric vehicle 20 . Accordingly, when AC power for slow charging is supplied to the plug port of the electric vehicle 20, charging may be performed through the onboard charger, and when DC power for fast charging is supplied to the plug port of the electric vehicle 20, charging without going through the onboard charger This can be done.

Here, the electric vehicle charging cable 10 may include at least one of the charging connector 11 , the outlet socket connection part 13 , and the in-cable control box 12 .

Here, the charging connector 11 may be a connection part that can be electrically connected to the electric vehicle 20 .

Here, the in-cable control box (ICCB, In-cable control box, 12 ) may communicate with the EVCC of the electric vehicle 20 to receive status information of the electric vehicle or control power charging to the electric vehicle 20 .

Here, although the in-cable control box 12 is illustrated as being included in the electric vehicle charging cable 10, it may be mounted in a place other than the electric vehicle charging cable 10, coupled to the SECC described below, or replaced with the SECC.

Here, the outlet socket connection unit 13 may be connected to an outlet receiving power as an electrical connection device such as a general plug or cord set.

For example, the power socket 30 may refer to an outlet installed in various places such as a parking lot attached to the home of the electric vehicle 20 owner, a parking area for charging an electric vehicle at a gas station, a shopping center or a parking area at work. can

In addition, by performing communication with one of the components (eg EVCC) of the in-cable control box 12 or the electric vehicle 20 in a building or place (eg, a stand) where the power socket 30 is installed, the charging procedure A device may be installed to control the , and this device may be referred to as a Supply Equipment Communication Controller (SECC).

Here, the SECC is an infrastructure management system that manages a power grid or a power grid through wired/wireless communication, a management server of a building in which the power socket 30 is installed (only a server to be described below), or an infrastructure server and can communicate.

Here, the power socket 30 may supply the AC power of the power system as it is, for example, AC power corresponding to at least one of 1P2W (single-phase 2-wire type) and 3P4W (3-phase 4-wire type) can be supplied.

In addition, here, the electric vehicle charging cable 10 supports slow charging to supply electric power for slow charging to the electric vehicle 20, and at this time, the electric vehicle 20 receives power between 3.3 and 7.7 (kWh) as the amount of slow charging electric power. can supply

In addition, here, the electric vehicle charging cable 10 may support rapid charging to supply electric power for rapid charging to the electric vehicle 20. At this time, power between 50 and 100 (kWh) is supplied to the electric vehicle 20 as the amount of fast charging electric power. can supply

2 is a conceptual diagram of an environment in which an electric vehicle wired charging method according to an embodiment of the present invention is performed.

2, the electric vehicle wired charging method is an in-cable control box (ICCB, 12), an electric vehicle (EV, 20), a power socket 30 installed in each home or apartment complex, a power socket ( 30) SECC that transmits and receives information on electric vehicle charging through wireless communication with community server 50, complex server 50, and ICCB 12 that performs management, including billing, for power supplied through Supply Equipment Communication Controller, 40, a power grid server 60 that operates a power grid supplied to each apartment complex or home by a power company, and an authentication server 70 that authenticates the user of the electric vehicle 20 or electric vehicle 20 ) may be performed by the mutual operation of at least one or more of.

Here, since the interaction between the ICCB 12 , the electric vehicle 20 and the power socket 30 may refer to FIG. 1 , the interaction with other entities will be described.

Here, the SECC 40 may support wired charging of the electric vehicle 20 by mutually relaying the server 50 and the ICCB 12 that manage the power socket 30 through wired/wireless communication.

For example, the SECC 40 may refer to an access point (AP), a wireless router, and may also be referred to as a Home to Vehicle manager (H2V manager). Here, the SECC or H2V Manager can control to temporarily stop charging when the power consumption increases significantly or exceeds the contract power due to the simultaneous use of electrical appliances in the home in the building where the outlet is installed, and the power consumption can be spared Charging can be resumed when an error occurs.

Here, the complex server 50 is a server for supplying and managing power in a multi-family house (eg, an apartment), and performs billing and settlement for electric vehicle charging in conjunction with the power grid server 60, or with the authentication server 70 In conjunction with the ICCB 12 , the electric vehicle 20 or the user of the electric vehicle 20 may be authenticated. For example, only the server 50 may perform authentication by checking a predetermined certificate in conjunction with the authentication server 70 .

In addition, the complex server 50 can monitor the amount of electricity used in the apartment house (for example, the amount of electricity charged in the electric vehicle) through the watt-hour meter installed in the apartment house in connection with the power grid 80 that supplies power in the apartment house. have.

Here, the power grid server 60 is a server that manages the power grid 80 that supplies power to the apartment house or performs charging for electric vehicle charging, and may be operated by a power company. Specifically, the power grid server 60 controls the power supply for charging the electric vehicle in the apartment house in conjunction with the server 50, or checks the amount of electric power used for charging the electric vehicle, thereby charging each individual electric vehicle or electric vehicle user. can be done

In addition, the power grid server 60 may supply power for charging an electric vehicle only to an electric vehicle user who is authenticated by interworking with the authentication server 70 .

Here, the authentication server 70 may only perform authentication for an electric vehicle, a user of an electric vehicle, or an electric vehicle charging cable in conjunction with the server 50 or the power grid server 60 . For example, the authentication server 70 stores authentication information such as an identification symbol of a user or electric vehicle for user authentication, an encryption and decryption key, an authentication password, and a certificate, and whether the stored authentication information matches the received user information By checking , authentication can be performed.

3 is a first sequence diagram of a method for wired charging of an electric vehicle according to an embodiment of the present invention.

Referring to FIG. 3 , a process of establishing a charging cable connection and a communication connection in the method for charging an electric vehicle wired according to an embodiment of the present invention may be described.

First, communication connection establishment between the EVCC 21 and the ICCB 12 may be performed (S300). For communication connection establishment, the EVCC 21 may transmit a signal or message for communication connection to the ICCB 12 .

Here, the communication connection between the EVCC 21 and the ICCB 12 may be made by PLC communication, and the PLC communication may be performed using a communication protocol according to ISO 15118-3 or ISO 12139, which is an international standard communication protocol. .

In addition, as a communication connection method between the EVCC 21 and the ICCB 12 , a signal level attenuation characterization (SLAC) method may be applied. Connection establishment through SLAC operates according to a request/response method, and since responses are made based on various levels of signal attenuation rates, the physically connected EVCC 21 and ICCB 12 can accurately identify each other.

When the ICCB 12 receives the message for communication connection from the EVCC 21, the ICCB 12 may transmit a first message (message1) for a response or confirmation of the SLAC connection to the EVCC 21 (S305). ).

When a communication connection is established between the EVCC 21 and the IVCC, the ICCB 12 may establish a communication connection with the SECC 40 through wireless communication (S310). Specifically, when the ICCB 12 transmits a request message for a wireless communication connection to the SECC 40 , the SECC 40 transmits a second message (message2) that is a response to the wireless communication connection request to the ICCB 12 . can be (S315).

When a communication connection is established between the ICCB (12) and the SECC (40), the SECC (40) has an identification symbol (ID) that can identify the SECC (40) and an electric vehicle identification symbol (ID) transmitted through the ICCB (12). ) can be transmitted to the community server 50 (S320). The electric vehicle identification symbol may be transmitted by the EVCC 21 to the ICCB 12 and received by the SECC 40 from the ICCB 12, but is not limited thereto, and other sensors or recognition devices connected to the SECC 40 may be used. It can also be obtained through

The complex server 50 may transmit the identification symbol of the server 50 (eg, server ID) or the identification symbol of the apartment complex managed by the server 50 to the SECC 40 (S325), and the SECC ( 40) may transmit the received server identification symbol back to the EVCC 21 (S330). Here, communication between the ^EVCC 21 and the SECC 40 may be performed by mobile communication ( ^3rd Generation, 4th Generation, Long Term Evolution, etc.), and wireless communication including Wireless Fidelity (WI-FI) communication. may be performed by

Here, the complex server 50 is not only the identification symbol of the server 50, but also information (eg, address, location, server IP address, server MAC) that can identify the apartment complex or server 50 in the power company. address, zip code, etc.) may be transmitted to the SECC 40 .

The EVCC 21 may transmit at least one of the electric vehicle identification symbol and the identification symbol of the server 50 to the power grid server 60 managed or operated by an electric company (S335). The power grid server 60 may transmit the received electric vehicle identification symbol to the corresponding complex server 50 ( S340 ) and check the charging preparation state of the electric vehicle from the complex server 50 .

Here, only the server 50 may use the received electric vehicle identification symbol to interwork with a separate authentication server to perform authentication for the electric vehicle or electric vehicle user according to the electric vehicle identification symbol, and when authentication is completed, an authentication completion message is displayed. may be transmitted to the power grid server 60 .

In addition, interworking with the authentication server may be performed not only in the server 50 but also in the power grid server 60 . For example, when the power grid server 60 only receives a response message (message3) for the reception of the electric vehicle identification symbol from the server 50 (S345), the electric power grid server 60 works with a separate authentication server to identify the electric vehicle Authentication may be performed on an electric vehicle or a user of an electric vehicle according to preference, and when authentication is completed, an authentication completion message may be transmitted to the user terminal 90 owned by the user of the electric vehicle or linked to the electric vehicle (S350).

Also, the power grid server 60 may transmit an authentication completion message according to the authentication completion to the EVCC 21 ( S355 ).

The authentication process with the authentication server may be selectively performed in one of the power grid server 60 or just the server 50 , or may be performed in both the power grid server 60 and only the server 50 .

Through the above-described process, the electric company can complete the authentication of the user or the user terminal 90 to receive the electric vehicle charging service in the apartment house. In addition, the electric company can complete the certification of the electric vehicle or electric vehicle communication controller (EVCC 21) mounted on the electric vehicle that wants to receive electric vehicle charging service in apartment complexes, etc.

In addition, for example of the user terminal 90, a communicable desktop computer (desktop computer), a laptop computer (laptop computer), a notebook (notebook), a smart phone (smart phone), a tablet PC (tablet PC), a mobile phone ( mobile phone, smart watch, smart glass, e-book reader, PMP (portable multimedia player), portable game console, navigation device, digital camera, DMB (digital multimedia) broadcasting) player, digital audio recorder, digital audio player, digital video recorder, digital video player, PDA (Personal Digital Assistant), and the like.

4 is a second sequence diagram of a method for wired charging of an electric vehicle according to an embodiment of the present invention.

Referring to FIG. 4 , an electric vehicle charging process according to the completion of authentication in the electric vehicle wired charging method according to FIG. 3 may be described.

First, the EVCC 21 may transmit at least one of charging information according to a charging loop and information on an electric vehicle to the SECC 40 ( S400 ).

Here, the charging loop may indicate a charging process according to slow charging.

Here, the charging information includes the amount of charging energy requested by the electric vehicle (EV Energy request), the energy reserve expected when fully charged (Full State of Charge, Full SOC), or the energy reserve amount expected at the requested charging end time (Bulk State of Charge). , Bulk SOC) may include at least one of. In this case, the amount of charging energy or energy reserve may be provided in percent units.

Here, the information of the electric vehicle includes at least one of electric vehicle status information (EV Status), an acceptable maximum current (EV) or voltage (EV Maximum Voltage Limit), and an energy capacity that can be stored in the battery (EV Energy Capacity). may include

Here, the electric vehicle state information may include at least one of a battery energy reserve amount and a charging mode of the electric vehicle.

The SECC 40 may simply transmit the charging information and the electric vehicle information obtained from the EVCC 21 to the server 50 (S405). For example, the SECC 40 may periodically or intermittently provide the amount of charge charged in the electric vehicle and the electric vehicle identification symbol (ID) to the server. Only the server 50 may store the electric vehicle identification symbol and the amount of charge, and transmit a response (OK) thereto to the SECC 40 (S410). In addition, the SECC 40 may transmit a signal or data necessary to the EVCC 21 during the charging loop of the electric vehicle (S415).

Meanwhile, when the amount of energy charged in the electric vehicle battery is equal to or greater than a predetermined reference value or a predetermined charging completion condition is satisfied, the EVCC 21 may transmit a charging completion message to the SECC 40 ( S420 ). In this case, the EVCC 21 may transmit the amount of charge charged in the electric vehicle to the SECC 40 simultaneously or sequentially with the charge completion message.

The SECC 40 may simply transmit a settlement request message including the amount of charge charged in the electric vehicle and the electric vehicle identification symbol to the server 50 (S425).

The complex server may transmit the amount of charge charged in the electric vehicle and the electric vehicle identification symbol to the power grid server 60 according to the settlement request message (S430). The power grid server 60 may settle a charge according to the amount of charge charged in the electric vehicle, and transmit at least one of the settled charge and the amount of charge charged in the electric vehicle to the user terminal 90 owned by the user of the electric vehicle or linked to the electric vehicle. (S435), a response (OK) according to the completion of the settlement can only be transmitted to the server 50 (S440).

Next, only the server 50 may transmit a response (OK) according to the settlement request message of the SECC 40 to the SECC 40 (S445). The SECC 40 may only transmit a response (OK) indicating that the settlement is completed to the EVCC 21 according to the response of the server 50 ( S450 ).

The EVCC 21 may transmit a communication termination message according to the completion of charging and settlement to the SECC 40 (S455). The SECC 40 may transmit a response (OK) to the communication termination message to the EVCC 21 (S460).

In the above embodiment, when a response (OK) is not received, the transmitter may retransmit the signal or message to the receiver a predetermined number of times. In addition, when receiving a failure response other than the OK response from the receiver, the sender may reversely transmit a failure response and restart the electric vehicle charging process from the beginning or from the time or amount of charge stored normally in the server.

5 is a block diagram of an In-cable Control Box (ICCB) according to an embodiment of the present invention.

Referring to FIG. 5 , an embodiment of the configuration of the ICCB 12 mounted on the electric vehicle charging cable 10 in FIG. 1 can be confirmed.

The in-cable control box 12 mounted on an electric vehicle charging cable for performing wired charging of electric vehicles by connecting to a power socket communicates with at least one processor (processor, 12a) and an electric vehicle communication controller (EVCC) mounted on electric vehicles. a first communication module 12b for collecting electric vehicle information by performing The 12a may include a memory 12d that stores instructions instructing to control the first communication module 12b and the second communication module 12c.

Here, the in-cable control box 12 may further include a watt-hour meter 12e for accumulating and measuring the amount of electric power charged to the electric vehicle by wire.

Here, the first communication module 12b may perform power line communication (PLC) communication.

Here, the second communication module 12c may perform wireless fidelity (WI-FI) communication.

Here, PLC communication may use a communication protocol according to ISO 15118-3 or ISO 12139.

Here, WIFI communication may use a communication protocol according to ISO 15118-8.

Here, the instructions may instruct the processor 12a to control the first communication module 12b to perform a communication connection setup through the EVCC and the SLAC according to a Signal Level Attenuation Characterization (SLAC) communication connection request from the EVCC. have.

Here, in the instructions, the processor 12a may control the second communication module 12c to transmit a wireless communication connection request to the SECC and receive a response message to the wireless communication connection request from the SECC.

6 is a flowchart of an electric vehicle wired charging method performed by a Supply Equipment Communication Controller (SECC) according to an embodiment of the present invention.

Referring to FIG. 6 , in an electric vehicle wired charging method performed in a supply equipment communication controller (SECC), a wireless communication connection is established with an in-cable control box (ICCB) mounted on an electric vehicle charging cable and the electric vehicle connected to the electric vehicle charging cable Receiving the information of (S600), transmitting the identification symbol of the electric vehicle and the identification symbol of the SECC included in the information of the electric vehicle only to the server (S610), only the step of receiving the identification symbol of the server from the server (S620) ) and just transmitting the identification symbol of the server to an Electric Vehicle Communication Controller (EVCC) mounted on an electric vehicle (S630).

Here, the wireless communication connection may be connected using a WIFI communication protocol according to ISO 15118-8.

Here, in the electric vehicle wired charging method performed by a Supply Equipment Communication Controller (SECC), receiving charging information according to a charging loop from the EVCC (S640) and transmitting the received charging information and electric vehicle information to a server only It may further include a step (S650) of doing.

Here, the charging information includes the amount of charging energy requested by the electric vehicle (EV Energy request), the energy reserve expected when fully charged (Full State of Charge, Full SOC), or the energy reserve amount expected at the requested charging end time (Bulk State of Charge). , Bulk SOC) may include at least one of.

Here, the information of the electric vehicle includes at least one of electric vehicle status information (EV Status), an acceptable maximum current (EV) or voltage (EV Maximum Voltage Limit), and an energy capacity that can be stored in the battery (EV Energy Capacity). may include

Here, the electric vehicle state information may include at least one of a battery energy reserve and a charging mode of the electric vehicle.

Here, the electric vehicle wired charging method performed in the SECC (Supply Equipment Communication Controller) includes the steps of receiving a charging completion message from the EVCC (S660) and transmitting a settlement request message (S670) according to the charging completion message only to the server may include more.

Here, the settlement request message may include at least one of the amount of charge charged in the electric vehicle and the identification symbol of the electric vehicle.

7 is a block diagram of a Supply Equipment Communication Controller (SECC) according to an embodiment of the present invention.

Referring to Figure 7, the power supply communication controller (SECC, 40), at least one processor (processor, 41), at least one processor (41) instructions to instruct to perform at least one step (instructions) It may include a communication module 43 for transmitting and receiving wireless communication messages by being controlled by a memory 42 for storing and at least one processor 41 .

Here, the communication module 43 may support WI-FI communication.

Here, the at least one step is the step of establishing a wireless communication connection with an in-cable control box (ICCB) mounted on the electric vehicle charging cable and receiving information of the electric vehicle connected to the electric vehicle charging cable, the electric vehicle included in the electric vehicle information Transmitting the identification symbol and the identification symbol of the power supply communication controller to the server, receiving the identification symbol of the server from the server, and adding the identification symbol of the server to the EVCC (Electric Vehicle Communication Controller) mounted on the electric vehicle It may include the step of transmitting to

Here, the wireless communication connection may be performed using a WIFI communication protocol according to ISO 15118-8.

Here, the instructions include the steps of the processor 41 controlling the communication module 43 to receive charging information according to a charging loop from the EVCC and simply transmitting the received charging information and information of the electric vehicle to the server. You can instruct them to do more.

Here, the instructions may instruct the processor 41 to control the communication module 43 to further perform the steps of receiving a charge completion message from the EVCC and simply transmitting a settlement request message according to the charge completion message to the server. have.

Here, the power supply communication controller 40 may perform the process according to FIGS. 3 and 4 or the process according to FIG. 6 , and a detailed description thereof will be omitted in order to avoid overlapping description.

The methods according to the present invention may be implemented in the form of program instructions that can be executed by various computer means and recorded in a computer-readable medium. The computer-readable medium may include program instructions, data files, data structures, and the like, alone or in combination. The program instructions recorded on the computer readable medium may be specially designed and configured for the present invention, or may be known and available to those skilled in the art of computer software.

Examples of computer-readable media may include hardware devices specially configured to store and execute program instructions, such as ROM, RAM, flash memory, and the like. Examples of program instructions may include not only machine language codes such as those generated by a compiler, but also high-level language codes that can be executed by a computer using an interpreter or the like. The hardware device described above may be configured to operate as at least one software module to perform the operations of the present invention, and vice versa.

In addition, the above-described method or apparatus may be implemented by combining all or part of its configuration or function, or may be implemented separately.

Although the above has been described with reference to preferred embodiments of the present invention, those skilled in the art can variously modify and change the present invention within the scope without departing from the spirit and scope of the present invention as set forth in the claims below. You will understand that it can be done.

Claims (20)

As an In-Cable control box mounted on an electric vehicle charging cable for connecting to a power socket and performing electric vehicle wired charging,
at least one processor;
a first communication module for collecting information of the electric vehicle by performing communication with an electric vehicle communication controller (EVCC) mounted on the electric vehicle;
a second communication module for transmitting the electric vehicle information collected by the first communication module to a Supply Equipment Communication Controller (SECC); and
and a memory for storing instructions instructing the at least one processor to control the first communication module and the second communication module,
The second communication module,
It is characterized in that it performs WI-FI (Wireless Fidelity) communication,
The electric vehicle information is
An in-cable control box comprising at least one of EV Status, an EV Maximum Current Limit or an EV Maximum Voltage Limit, and an EV Energy Capacity that can be stored in the battery. . In claim 1,
The incable control box is
The in-cable control box further comprising a watt-hour meter for accumulating and measuring the amount of electric power charged to the electric vehicle by wire. In claim 1,
The first communication module,
In-cable control box, characterized in that performing PLC (Power line communication) communication. delete In claim 3,
The PLC communication uses a communication protocol according to ISO 15118-3 or ISO 12139, in-cable control box. In claim 1,
WI-FI (Wireless Fidelity) communication uses the communication protocol according to ISO 15118-8, in-cable control box. In claim 5,
The commands are
The processor controls the first communication module,
In accordance with a Signal Level Attenuation Characterization (SLAC) communication connection request from the EVCC, instructing to perform communication connection setup through the EVCC and the SLAC, an in-cable control box. In claim 6,
The commands are
The processor controls the second communication module,
Transmitting a wireless communication connection request to the SECC, and instructing to receive a response message to the wireless communication connection request from the SECC, the in-cable control box. In the electric vehicle wired charging method performed in the SECC (Supply Equipment Communication Controller),
establishing a wireless communication connection with an in-cable control box (ICCB) mounted on an electric vehicle charging cable and receiving information of an electric vehicle connected to the electric vehicle charging cable;
transmitting only the identification symbol of the electric vehicle and the identification symbol of the SECC included in the information of the electric vehicle to a server;
receiving an identification symbol of the complex server from the complex server; and
Transmitting the identification symbol of the server to the EVCC (Electric Vehicle Communication Controller) mounted on the electric vehicle,
The wireless communication connection is
It is characterized by using WI-FI (Wireless Fidelity) communication,
The electric vehicle information is
An electric vehicle wired charging method comprising at least one of electric vehicle status information (EV Status), an acceptable maximum current (EV Maximum Current Limit) or voltage (EV Maximum Voltage Limit), and an EV Energy Capacity that can be stored in a battery . In claim 9,
The WI-FI (Wireless Fidelity) communication is,
A wired charging method for electric vehicles connected using WIFI communication protocol according to ISO 15118-8. In claim 9,
receiving charging information according to a charging loop from the EVCC; and
Further comprising the step of transmitting the received charging information and the information of the electric vehicle to the server, the electric vehicle wired charging method. In claim 11,
The charging information is
Among the amount of energy requested by the electric vehicle (EV Energy request), the amount of energy expected when fully charged (Full State of Charge, Full SOC), or the amount of energy expected at the requested charging end time (Bulk State of Charge, Bulk SOC) A wired charging method for an electric vehicle comprising at least one. delete In claim 9,
The electric vehicle status information is
An electric vehicle wired charging method comprising at least one of a battery energy reserve of the electric vehicle and a charging mode. In claim 11,
receiving a charging completion message from the EVCC; and
Further comprising the step of transmitting a settlement request message according to the charging completion message to the server, the electric vehicle wired charging method. In claim 15,
The settlement request message includes at least one of an amount of charge charged in the electric vehicle and an identification symbol of the electric vehicle. at least one processor;
a memory for storing instructions instructing the at least one processor to perform at least one step; and
A power supply communication controller (SECC, Supply Equipment Communication Controller) including a communication module for transmitting and receiving wireless communication messages by being controlled by the at least one processor,
The at least one step is
establishing a wireless communication connection with an in-cable control box (ICCB) mounted on an electric vehicle charging cable and receiving information about an electric vehicle connected to the electric vehicle charging cable;
simply transmitting the identification symbol of the electric vehicle and the identification symbol of the power supply communication controller included in the information of the electric vehicle to a server;
receiving an identification symbol of the complex server from the complex server; and
Transmitting the identification symbol of the server to the EVCC (Electric Vehicle Communication Controller) mounted on the electric vehicle,
The wireless communication connection is
It is characterized by using WI-FI (Wireless Fidelity) communication,
The electric vehicle information is
Power supply communication including at least one of EV Status, EV Maximum Current Limit or EV Maximum Voltage Limit, and EV Energy Capacity that can be stored in the battery controller. In claim 17,
The WI-FI (Wireless Fidelity) communication is,
Power supply communication controller, performed using WIFI communication protocol according to ISO 15118-8. In claim 17,
The commands are
The processor controls the communication module,
receiving charging information according to a charging loop from the EVCC; and
Instructing to further perform the step of transmitting the received charging information and the information of the electric vehicle to the server, the power supply communication controller. 20. In claim 19,
The commands are
The processor controls the communication module,
receiving a charging completion message from the EVCC; and
Instructing to further perform the step of transmitting a settlement request message according to the charging completion message to the server, the power supply communication controller.

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