KR20130006949A - Method for charging electric vehicle and apparatus thereof - Google Patents

Abstract

PURPOSE: An electric car charging method is provided to enable a manager to grasp a situation of chargers in each charging station in real time, thereby inquiring power consumption of each charger, an electric charge payment history and charger information. CONSTITUTION: A processor(110) generates a request message requesting approval of a charging service and delivers the request message to a communication unit. The communication unit transmits the request message to an operation server(300). The communication unit receives an approval message for the request message and time information from the operation server. A power supply unit(170) supplies power to a car corresponding to the approval message. [Reference numerals] (110) Processor; (120) Memory; (130) Communication device; (140) Input device; (150) Output device; (160) Recognition device; (170) Power supply unit; (200) Management device; (300) Operation server

Description

Method and device for charging electric vehicle

The present invention relates to an electric vehicle, and more particularly, to a charging method and apparatus for an electric vehicle.

Around 30% of the world's petroleum energy is consumed by vehicles. In the United States, in particular, that percentage is 60 percent. As such, a large amount of petroleum energy consumed in the operation of vehicles is considered to be the main culprit of global warming by emitting large amounts of carbon dioxide. As a solution to this, researches by government and private companies are actively being conducted to develop transportation and transportation environment using renewable energy, which is different from existing energy sources.

Renewable energy vehicles are classified into vehicles using existing petroleum energy, plug-in hybrid electric vehicles (PHEV) using petroleum energy and batteries, and electric vehicles (EV) using only batteries. In recent years, the movement to introduce plug-in hybrid cars and electric vehicles has been actively performed worldwide. Especially in Korea, where there is a lack of existing resources, we will actively accept this.

Electric vehicles have much less pollutants emitted during vehicle charging than those using fossil fuels and do not emit pollutants even when driving. In addition, the electric vehicle does not cause noise problems by using a single power source using a battery.

However, the electric vehicle has a disadvantage that the mileage that can be run by a single charge is shorter than a vehicle using fossil fuel, so that the public parking lot and outdoor public parking lot of the electric vehicle charging station and the system for managing the user using the same are short. Introduction is necessary.

An object of the present invention to provide an electric vehicle charging method and apparatus.

Another object of the present invention to provide an electric vehicle charging device installation method.

Still another object of the present invention is to provide a method for recognizing and authenticating a vehicle and / or a user in an electric vehicle charging service.

Still another object of the present invention is to provide a charging / payment method for a charging service in an electric vehicle charging service.

According to one aspect of the present invention, a method for charging a vehicle by a charger is provided. The method includes transmitting a request message for requesting approval of a charging service to an operation server operating a charging service platform, receiving an approval message and time information which is a response to the request message from the operation server, and the time information. Synchronizing the time with the operation server based on the step of starting the charging of the vehicle according to the approval message. The charging time of the vehicle may be determined based on the synchronized time.

According to another aspect of the present invention, a charger for charging a vehicle is provided. The charger generates a request message for requesting the approval of the charging service to the operation server operating the charging service platform, and transmits the request message to the communication unit, and transmits the request message to the operation server, the request message from the operation server A communication unit for receiving a response message and time information that is a response, and a power supply for supplying power to the vehicle in accordance with the approval message. The processor may synchronize time with the operation server based on the time information, and determine a charging time of the vehicle based on the synchronized time.

The manager can grasp the real-time use status of chargers at each charging station, and can control, cut off, check, manage, etc.

Solutions that support the scalability of external systems and the interface of all chargers can maximize the operational management efficiency of EV charging service providers.

In addition, it is possible to increase the convenience of users of EV charging stations.

1 is an example of an electric vehicle charging service platform.
2 is a flowchart illustrating an installation procedure of a charger.
3 is a flowchart illustrating a procedure of a charging service.
4 is a block diagram illustrating a charger in which an embodiment of the present invention is implemented.

Electric vehicles (electric vehicles) are driven by electricity, the vehicle is a vehicle that obtains the driving energy from the electric energy, not from the combustion of fossil fuel, like the conventional cars. Electric vehicles are plug-in electric vehicles (EV) and plug-in hybrid electric vehicles (PHEVs) that add engines to the electric vehicles. Hybrid electric vehicles (HEV), fuel cell electric vehicles (FCEVs) that produce electricity from hydrogen and oxygen, and low-speed electric vehicles (NEVs). In the following description based on a negotiated electric vehicle, those skilled in the art (hereinafter, those skilled in the art) of the invention belongs to other electric vehicles, that is, plug-in hybrid vehicle, hybrid vehicle, fuel cell vehicle, It can be easily applied to low-speed electric vehicles.

1 is an example of an electric vehicle charging service platform.

Referring to FIG. 1, the charger 100 is a device installed in a parking lot and / or a charging station such as a private / public house, a public facility, a large commercial facility, and supplies power for charging a vehicle of a user. The charger 100 communicates with the operation server 300 through the management device 200 or directly with the operation server 300.

The management device 200 is an entity managing at least one or more chargers 100 installed in a parking lot or a charging station, and may be referred to as a charger management device or a (charger) management system. The management device 200 may include a parking management system or may be connected to the parking management system.

The operation server 300 is an entity that operates the charging service platform, and may be referred to as an operating system, an information providing server, or the like. The operation server 300 may include various databases such as a charger database (DB, database), a parking management database, a user database, a charging product database, and controls the charger 100 through the management device 200 or directly chargers. Control 100.

The charging service platform provides a charging service in order to: a) install a charger, b) charging service, c) vehicle and / or user recognition, authentication d) charging / payment of charging service e) exchange information with the power infrastructure platform. , f) interworking with an external charging service platform, g) supplying power, and h) charger failures. Hereinafter, step-by-step scenarios of each procedure will be described. * /

a) installation of charger

2 is a flowchart illustrating an installation procedure of a charger.

Referring to FIG. 2, the management device includes charger management information including at least one of a charger ID, a charging station ID, a charger IP (Internet Protocol) number, a charger location, a charger type, a charger manufacturer, and a charger port number. Send to production server. The operation server receives the charger management information and registers it in the charger database. In addition, the charger stores the charger management information in a memory (S210). The charger management information may be manually input by a charger installer.

When the charger is turned on, the charger transmits a power on alarm message and / or authentication information to the operation server (S220), and the operation server transmits the power on alarm message and / or authentication. Receive information. The operation server compares the information for authentication with the information registered in the charger database, and transmits an authentication success message to the charger if the charger is a registered charger (S230). The charger receiving the authentication success message performs an initialization of the module and / or a self test (S240) and transmits an error message to the operation server when there is a problem. If there is no abnormality, the charger transmits the profile version information of the charger to the operation server (S250).

If there is a higher version than the profile version received from the charger, the operation server sends the higher version profile to the charger. The profile information includes at least one of charging service platform information, charging product list, and billing / payment system information. The operation server checks the setting information of the current charger. The setting information of the charger includes output device setting information (speaker / display device), recognition device setting information (camera / voice recognition device), language setting information, and the like.

After the above procedure, the operating server transmits a security key (key) to the charger (S260), after which the charger encrypts / decrypts data using the security key when transmitting data to the operating server. A detailed algorithm of the security key will be described through 'c) vehicle / user recognition / authentication'.

When all the installation procedures of the charger is completed, the charger transmits a service start message to the operation server (S270). When the operation server does not receive the service start message, the operation server requests the transmission of the service start message, and if there is no response after the set number of times, it is determined that a communication disconnection or a problem occurs in the charger equipment, and the SMS Send a message about the current situation by using a method such as (Short Message Service). In this case, the operation server may transmit an initialization command to the charger.

a-1) Installation of charger with different interface from the operation server

Recently, slow / fast chargers of various models have been released, but the external interfaces are different for each charger, and there is a problem that it is difficult to flexibly cope with service interworking and system expansion in the future. For this reason, it is possible to maximize the operation management efficiency of EV charging service providers through the Charging Device Agent (CDA) that supports the scalability of external systems and the interface of all chargers. The charger agent is a protocol adapter software module that exchanges commands and information between the operating server running the charging service platform and the charger powering the user's vehicle.

The charger and operation server store charger management information including at least one of charger ID, charging station ID, charger IP number, GPS coordinates, charger type, charger manufacturer, and charger port number of the charger in a memory and a database through a charger agent. . In this case, the charger and the operation server may receive the information in a private message or may be manually input by an administrator. The charger and the operation server storing the information map the information to information of a common information model (CIM).

The following installation procedure is the same as 'a) charger installation procedure'. That is, the procedure proceeds from step S220 of FIG.

b) charging service

3 is a flowchart illustrating a procedure of a charging service.

Referring to FIG. 3, the management apparatus guides a user to easily find a parking space by using a parking management system. The parking management system may be included in or connected to a management device and / or an operation server. The parking management system may be provided by an operation server and may be updated in real time. When a vehicle enters a parking lot and / or charging station in a private / shared house, public facility, large commercial facility, etc., the management device recognizes a vehicle identification mark such as a license plate using a vehicle recognition device, for example, a camera. The information is transmitted to the operation server, and the operation server stores the vehicle information in the parking management database. Thereafter, the operation server checks the charger in the standby state, and provides the user with location information of the charger in the standby state. As a result, the user's convenience may be increased.

On the other hand, the charger receives the vehicle and / or user information (S310), and performs the recognition / authentication procedure. A more detailed description of the recognition / authentication process will be provided through 'c) vehicle recognition and / or user recognition and authentication'.

After the user information recognition procedure is completed, the charger outputs the battery information of the vehicle based on the guide information of the charging service and / or the battery management system (BMS) through an output device, for example, a display or a speaker (S320). )do. At this time, the charger may output a list of charging products and a method of using the charging service. The charger may receive selection information of a charging product list from a user. The charging product list can be known through the profile information received from the operation server in the 'a) installation of the charger', and can be corrected with the operation server by modifying the profile information.

When the charging service is started by the user's command, the charger sends a request for approval of the charging service to the operation server, and transmits the selected charging goods and / or battery information (S330). The operation server performs time synchronization with the charger together with the response to the approval request (S340). For example, the time synchronization may include a process in which the operation server transmits time information of the current operation server to the charger. Since the time information is important for billing / payment, the charger and the operation server undergo a time synchronization process for absolute checking of the charging time.

When charging of the vehicle starts (S350), the charger outputs information on the charging progress state, for example, estimated time required, progress rate, etc. through the output device. The operation server monitors the charging status of the charger in real time to ensure the best power quality. The method of maintaining the best power quality and transmitting / distributing the operation server will be described through 'g) supplying power'.

The charger terminates the charging service when a termination command is input by the user or charging is completed. The charger may reconfirm whether the terminal is terminated when a termination command is input by the user, and may resume or terminate the charging service according to the user's selection.

When the charging service ends (S360), the charger transmits an end message of the charging service to the operation server (S370). At this time, the charger may transmit the charging time information and power usage to the operation server. The operation server transmits the charging / payment information determined by the 'd) charging / payment' procedure to the charger (S380). The charger outputs the charging result and the charging / payment information (S390), and enters the standby state when the charging / payment and unplug of the user are completed.

c) recognition and authentication of vehicles and / or users;

-Vehicle Recognition Method

Each charger of the charging station may include a recognition device such as a camera for monitoring the vehicle. The charger not only monitors the charging progress in preparation for a problem that may occur during the charging service through the recognition device, but also recognizes a vehicle identification mark such as a license plate when the vehicle is stopped around the charger and recognizes the vehicle. The vehicle identification information indicating the identification mark is transmitted to the operation server. The operation server queries the vehicle identification information and / or user information and transmits the inquired information to the charger.

-User Recognition Method

Users can be recognized through commonly used identification cards and credit cards. In addition, the user may be recognized through biometrics, for example, face recognition, iris recognition, fingerprint recognition, and the like. In addition, the user may be recognized by outputting an identification card on the screen of the smart device. In addition, a user may directly recognize a user by directly inputting a reservation number or reservation information or by outputting a QR code on a smart device screen. In addition, the user may be recognized through an RFID or Near Field Communication (NFC) supporting device.

-Authentication method

When the above-described vehicle and / or user recognition procedure is normally performed, the charger transmits vehicle identification information and / or user identification information to the operation server to perform two-way authentication. At this time, the two-way authentication is performed using the security key defined in 'a) installation of the charger. The algorithm of security key uses web service security (WSS, WS-Security, Web Service Security).

In order to use the web service security method, the operation server and the charger each have their own security key and the other party's security key in memory.

The charger becomes the sender when the service request is made, and the operation server becomes the receiver. On the other hand, in service response, the operation server is the sender and the charger is the receiver.

If the charger wants to send the message using the web service security method when requesting the service, the message is encrypted using the security key of the operation server and the message is signed with its own security key. The operation server receiving the service request verifies the message using the charger's security key and decrypts the message with its own security key.

If the server wants to send a message using the web service security method in response to the service response, the message is encrypted using the charger's security key, and the message is signed with its own security key. The charger receiving the service response verifies the message using the security key of the operation server and decrypts the message with its own security key.

On the other hand, the operation server performs the authentication procedure by comparing the received recognition information with the corresponding information in the database, and transmits the result to the charger. If the charger is an authorized vehicle or user, the charger proceeds to the 'b) charging service' procedure, but if the charger is an unauthorized vehicle or user, the charger outputs an error message to the output device.

d) charging / payment of recharge service;

-Charging / Payment Policy of Recharge Service

The operation server may determine the charging / payment policy of the charging service and operate various charging / payment policies.

For example, the operation server may apply the charging / payment policy differently depending on whether it is a slow charge or a fast charge. In the case of a charger supporting both slow charging and rapid charging, the charger may receive selection information of a charging product list from a user, and the selection information includes information on whether the selected product is slow charging or rapid charging. In addition, the charger may be set to use a slow charging method when the power unit price is high by default, and to use a fast charging method when the power unit price is low. The charger may also output this information to provide the information to the user.

As another example, the operational server may apply a billing / payment policy differently depending on whether it uses main power or renewable energy. For example, a higher charging rate may be applied when using mains power, and a lower charging rate may be applied when using renewable energy. Supply and use of main power and renewable energy will be described in detail through the provision of 'g) supply of electric power'.

The operation server requests the profile information of the charger to change the charging / payment policy and checks the currently set charging / payment policy. When the operation server wants to change the billing / payment policy, it changes the billing / payment policy information of the profile information and sends it to the charger, and stores it in the charger database. The charger changes the charging / payment policy to reflect the changed charging / payment policy. As a result, the operation server may change the charging / payment policy of the charger in real time or collectively.

The charger may request this from the operation server for the change of the billing / payment policy, and change the profile information upon approval of the operation server.

-Charging / Payment Method of Filling Service

Charging / payment methods for recharge service are divided into prepaid methods such as cash payment, credit card payment, mobile phone payment, and postpay methods such as integrated housing billing, mobile carrier billing, and utility provider billing. In order to enable various charging / payment methods, the operation server and the charger may change the charging / payment method.

The operation server requests the profile information of the charger to change the charging / payment method and checks the currently set charging / payment method. When the operation server wants to change the billing / payment method, it changes the billing / payment method information of the profile information and transmits it to the charger and stores it in the charger database. The charger changes the charging / payment method to reflect the changed charging / payment method. As a result, the operation server may change the charging / payment method of the charger in real time or collectively.

The charger may request this from the operation server for the change of the billing / payment method, and may change the profile information upon approval of the operation server.

- Other

The operation server can be set to use the unit of currency of the country where the charger is installed for the type of currency of the billing / payment information, which can also be set in the charger.

e) exchange of information with power infrastructure platforms

Information exchange with the power infrastructure platform is performed through a charging agent agent (CDA) and a power conditioning system device agent (CDA) that communicate with the charger among the middleware that is the core of the EV charging service platform. At this time, the charging service platform and the power infrastructure platform interwork with a common model, which is a web information-based Common Information Model (CIM).

The charging service platform uses a private message protocol to process data to and from each charger. At this time, the private message transmitted from the charger is converted into a common model which is a CIM (Common Information Model). The charging service platform then communicates with the power infrastructure platform using the Simple Object Access Protocol (SOAP) protocol.

The operation server also uses a Power Conditioning System Device Agent for power demand response and quality control and monitoring. A common model, which is a CIM (Common Information Model) based on the same web service as described above, is applied to install a charger having an interface different from the operation server defined in the procedure “a-1) Installing a Charger of a Different Interface from the Operation Server. Scalability and efficiency can be increased.

f) interworking with external charging service platform

Interworking with external charging service platform uses web service method.

The Web services approach is software in a high-efficiency application Service Oriented Architecture (SOA) environment that enables dynamic and interconnected business processes, loosely connecting the interoperable systems. To ensure versatility, security, stability and scalability, EV charging service platforms support SOA environments.

For the interworking between the operation server and the external charging service platform, a gateway server provided with a flexible interworking of a loose connection structure and an interface version management function capable of interworking regardless of the service version is used. The gateway server provides a version-specific control function and an internal and external interworking function that can be separated into each version when requesting information from the operation server. Accordingly, the gateway server may interwork with an external charging service platform at the request of the operation server.

g) supply of power

In order to provide more stable power to users through power supply and load balancing, the operation server is a power conversion device agent (PCS Device Agent, Power Conditioning System Device Agent) that supplies power and the charging agent (CDA, Charging Device) Collects current data (total power supply, total usage data) through communication of agent and controls power supply based on power quality algorithm.

The supply of electric power is divided into supply by main power supply and renewable energy (fuel cell, wind power, solar heat). As the main power source is applied with a progressive system policy based on the supply price and usage by the electricity provider's time zone, the billing amount is set differently according to time and usage. Different billing policies also apply to homes, government offices and commercial buildings. If only the main power source is used in the EV charging service platform, the burden of the cost is greater than that of the current fossil energy, so the EV charging service platform uses the renewable energy in parallel.

The operation server can control the supply and use of renewable energy. If the amount of renewable energy generation is greater than the power consumption, the renewable energy is used. If the amount of renewable energy generation is insufficient, the main power source is used. In addition, when an energy storage system (ESS) is introduced into a power generation device of renewable energy, when the amount of renewable energy generation is greater than the total power consumption, power generated by the margin is stored in the energy storage system to allow for renewable energy. If you run out of energy, you can use the stored new energy.

h) failure of the charger

The charger displays error information on the output device when an error occurs, and the management device recognizes the error information and transmits the error information to the operation server. As an example, the charger may display the error information as a QR code, and the management device may recognize this and transmit the error information to the operation server.

The operation server analyzes the transmitted error information and transmits the analyzed information to the management device. The management device may take action on the error based on the analyzed information received from the operation server.

4 is a block diagram illustrating a charger in which an embodiment of the present invention is implemented.

The charger 100 may include a processor 110, a memory 120, a communication device 130, an input device 140, an output device 150, a recognition device 160, and a power supply device 170. Include. The memory 120 is connected to the processor 110 and stores various information for driving the processor 110. The communication device 130 is connected to the processor 110 and transmits and / or receives a wired / wireless signal to communicate with the management device 200 and the operation server 300.

The processor 110 implements the proposed functions, processes and / or methods. In the embodiments of a) to h), the operation of the charger may be implemented by the processor 110.

The input device 140 is a device that receives a command such as a menu selection from a user, and may be implemented by various means such as a touch screen, a key pad, a voice recognition device, and the like. The output device 150 is a device for providing a user with information such as a charging status and may be implemented by various means such as a monitor, a speaker, and a liquid crystal display. The recognition device 160 is a device for recognizing a vehicle and a user, and may be implemented by various means such as a camera, an iris sensor, a fingerprint sensor, and a QR code reader. The input device 140, the output device 150, and the recognition device 160 are connected to the processor 110 to input / output and recognize various information for driving the processor 110.

The power supply device 170 is a device for supplying power to the vehicle through an outlet, and is controlled by the processor 110.

The processor 110 may include an application-specific integrated circuit (ASIC), another chipset, a logic circuit, and / or a data processing device. Memory 120 may include read-only memory (ROM), random access memory (RAM), flash memory, memory card, storage medium, and / or other storage device. The communication device 130 may include a baseband circuit for processing a radio signal. When the embodiment is implemented in software, the above-described techniques may be implemented with modules (processes, functions, and so on) that perform the functions described above. The module may be stored in the memory 120 and executed by the processor 110. The memory 120 may be inside or outside the processor 110 and may be connected to the processor 110 by various well-known means.

In the exemplary system described above, the methods are described based on a flowchart as a series of steps or blocks, but the invention is not limited to the order of steps, and any steps may occur in a different order or concurrently from the other steps described above. have. Those skilled in the art will also appreciate that the steps shown in the flowcharts are not exclusive and that other steps may be included or one or more steps in the flowcharts may be deleted without affecting the scope of the present invention.

Claims (12)

In the method for charging the vehicle by the charger,
Transmitting a request message requesting approval of a charging service to an operation server operating a charging service platform;
Receiving an approval message and time information which is a response to the request message from the operation server;
Synchronizing a time with the operation server based on the time information; And
Starting charging of the vehicle according to the approval message;
The charging time of the vehicle is determined based on the synchronized time. The method of claim 1,
Generating vehicle identification information by recognizing an identification mark of the vehicle;
Transmitting the vehicle identification information to the operation server; And
Receiving the vehicle information from the operation server further comprising the vehicle charging method. The method of claim 1,
The requesting of the approval of the charging service includes transmitting the charging product information provided to the vehicle to the operation server. The method of claim 3,
The charging product information includes a charging method information provided to the vehicle. The method of claim 1,
The charging method of the vehicle further comprises the step of transmitting a charge service termination message to the operation server. 6. The method of claim 5,
The transmitting of the charge service end message may include transmitting a charging time or power consumption of the vehicle to the operation server. 6. The method of claim 5,
And receiving payment information to be paid by the user of the vehicle from the operation server. 8. The method of claim 7,
And the payment information includes a charging / payment policy determined according to a charging product provided to the vehicle. In the charger for charging a vehicle,
A processor configured to generate a request message for requesting approval of a charging service to an operation server operating a charging service platform and to transmit it to a communication unit;
A communication unit for transmitting the request message to the operation server and receiving an approval message and time information which is a response to the request message from the operation server;
Including the power supply for supplying power to the vehicle according to the approval message,
And the processor synchronizes time with the operation server based on the time information, and determines a charging time of the vehicle based on the synchronized time. The method of claim 9,
And the communication unit transmits profile version information including at least one of charging service platform information, charging product list, and billing / payment system information to the operation server. The method of claim 9,
Further comprising a recognition device for recognizing the identification mark of the vehicle,
The processor generates vehicle identification information based on the identification mark of the vehicle, and transmits the vehicle identification information to the communication unit,
The communication unit is a charger for transmitting the vehicle identification information to the operation server, and receives the information of the vehicle from the operation server. The method of claim 9,
The communication unit charger for receiving payment information to be paid by the user of the vehicle from the operation server.

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