KR102631019B1 - Apparatus and Method For Communicating With Electric Vehicle Charger - Google Patents

Abstract

The present invention relates to an electric vehicle charger communication device and method, and more specifically, to an electric vehicle charger communication device and method that enables various versions of OCPP communication and has scalability to new OCPP versions.
An electric vehicle charger communication device according to an embodiment of the present invention includes a charger communication connection unit configured to receive a monitoring message containing monitoring information from an external charger; OCPP communication unit configured to receive monitoring messages from the charger communication connection - The OCPP communication unit includes a plurality of OCPP communication modules for each version, and each OCPP communication module for each version determines whether or not to receive a monitoring message depending on the OCPP version of the external charger. Configured-; a charger communication message common service unit configured to receive a monitoring message from the OCPP communication unit and generate an operating system message based on the monitoring information; an operating system communication connection unit configured to receive an operating system message from the charger communication message common service unit and transmit it to an external operating system; and a communication control unit, wherein the communication control unit receives and stores at least one of monitoring information, a monitoring message, and an operating system message from at least one of a charger communication connection unit, an OCPP communication unit, a charger communication message common service unit, and an operating system communication connection unit. It may contain configured storage modules.

Description

Electric vehicle charger communication device and method {Apparatus and Method For Communicating With Electric Vehicle Charger}

The present invention relates to an electric vehicle charger communication device and method, and more specifically, to an electric vehicle charger communication device and method that enables various versions of OCPP communication and has scalability to new OCPP versions.

With the popularization of electric vehicles, the electric vehicle charging business is being activated to provide charging services for electric vehicle users at home and abroad.

In Korea, charging services that only provide electric vehicle charging are in the growth stage, but in developed countries overseas, they go beyond simple charging services and include demand response using electric vehicles, connection between charging services such as V2G and the power grid, roaming between charging service providers, and charging services and other services. The scope of the electric vehicle charging business is gradually expanding, including the convergence of .

In Korea, existing charging operators, including KEPCO, use non-standard charger communication protocols that are different for each charging operator for communication between the charger and the operating system, which is essential for electric vehicle charging services. Not only are there many difficulties, but charger manufacturers also have to manufacture and support chargers that support the charger communication protocol for each charging business, which incurs a lot of cost.

Overseas, OCPP (Open Charge Point Protocol), a charger communication protocol between the charger and the operating system, has become a global standard, and has been established as an official standard as IEC63110 by the IEC International Organization for Standardization, and is widely used in North America and Europe.

In addition to operation and maintenance and cost reduction through mutual compatibility, the use of the OCPP standard charger communication protocol is essential for future expansion of the charging business, such as connection between the charging service and power grid described above, roaming between charging service providers, and charging convergence services. More importantly, in fact, OpenADR for electric vehicle demand response and IEC15118 for V2G are undergoing standardization work considering linkage with OCPP.

In the case of OCPP, starting with version OCPP 1.2, OCPP 1.5, OCPP 1.6, and OCPP2.0 have been established, and new versions will continue to be created in the future according to the needs of the charging business.

Although OCPP is a standard charger communication protocol between the charger and the operating system, there is a problem in that with the establishment of a new OCPP version, a new operating system must be created and an operating system for each version must be installed.

Conventional invention 10-2019-0012079 proposes a charger gateway that collects information from the charger using various charger communication protocols and effectively transmits and receives information to and from a higher-level integrated or regional operating system through protocol conversion depending on the operating system type. However, grouping and a method of communicating using DDS (Data Distribution Service), and the conversion method is simply described as converting various types of charger protocol data to enable DDS communication processing and then transmitting it to the operating system. No conversion method was provided. In addition, even though charging information is communicated using various charger communication protocols, there is a problem that a separate charger gateway is required for each charger communication protocol, and no method of providing scalability for new charger communication protocol versions has been presented.

The purpose of the present invention is to provide an electric vehicle charger communication device that enables simultaneous communication of various versions of OCPP, a standard charger communication protocol, with a single charger communication device and provides scalability for new OCPP versions.

In addition to the technical problems of the present invention mentioned above, other features and advantages of the present invention are described below, or can be clearly understood by those skilled in the art from such description and description.

An electric vehicle charging device according to an embodiment of the present invention includes a charger communication connection unit configured to receive a monitoring message containing monitoring information from an external charger; OCPP communication unit configured to receive monitoring messages from the charger communication connection - The OCPP communication unit includes a plurality of OCPP communication modules for each version, and each OCPP communication module for each version determines whether or not to receive a monitoring message depending on the OCPP version of the external charger. Configured-; a charger communication message common service unit configured to receive a monitoring message from the OCPP communication unit and generate an operating system message based on the monitoring information; an operating system communication connection unit configured to receive an operating system message from the charger communication message common service unit and transmit it to an external operating system; and a communication control unit, wherein the communication control unit receives and stores at least one of monitoring information, a monitoring message, and an operating system message from at least one of a charger communication connection unit, an OCPP communication unit, a charger communication message common service unit, and an operating system communication connection unit. It may contain configured storage modules.

The electric vehicle charging device according to another embodiment of the present invention further includes a charger communication management unit, and the charger communication management unit may include an OCPP communication module management module configured to manage OCPP communication modules for each version of the OCPP communication unit.

An electric vehicle charging device according to another embodiment of the present invention includes a charger communication management unit, a common service - OCPP message mapping management module; and an OCPP message management module, wherein the operating system communication connection unit includes control request information for an external charger from an external operating system - the control request information includes OCPP version information of the external charger. It is further configured to receive a request message, wherein the charger communication message common service unit receives the first request message from the operating system communication connection unit, and receives the common service - OCPP version information of the charger outside the control request information from the OCPP message mapping management module. Based on the content of the control request information, mapping information between the OCPP version message of the external charger and control request information is received, message information is received from the OCPP message management module according to the mapping information, and based on the message information, the external charger further configured to generate a second request message according to the OCPP version, wherein the second request message includes control request information, and the OCPP communication unit is further configured to receive the second request message from the charger communication message common service unit. ― Each OCPP communication module for each version is configured to determine whether or not to receive the second request message depending on the OCPP version of the external charger. ―, The charger communication connection unit receives the second request message from the OCPP communication unit and sends the request to the external charger. 2 is further configured to transmit a request message, and the storage module receives control request information, a first request message, and a first request message from at least one of an operating system communication connection unit, a charger communication message common service unit, a charger communication management unit, an OCPP communication unit, and a charger communication connection unit. It is further configured to receive and store at least one of the two request messages, and the monitoring information may include processing result information for the control request.

According to the electric vehicle charger communication device and method according to various embodiments of the present invention, a new operating system must be created according to various versions of the OCPP standard charger communication protocol or according to the establishment of a new version, and an operating system for each version must be installed. The problem can be solved.

According to various embodiments of the present invention, a standardized charger communication environment is provided and simultaneous communication of various versions of OCPP, a standard charger communication protocol, is possible with a single charger communication device, so that manpower and maintenance of electric vehicle chargers and operating systems are required. It has the effect of reducing costs.

In addition, the charger communication device according to various embodiments of the present invention can provide expandability for new OCPP versions, so high compatibility and continuous cost reduction effects can be expected.

1 is a diagram showing the configuration of an electric vehicle charger communication system according to an embodiment of the present invention.
Figure 2 is a diagram showing the configuration of an electric vehicle charger communication device according to an embodiment of the present invention.
Figure 3 is a diagram showing the configuration of a security management unit according to an embodiment of the present invention.
Figure 4 is a diagram showing the configuration of a communication control unit according to an embodiment of the present invention.
Figure 5 is a diagram showing a method in which an electric vehicle charger communication device performs a monitoring service according to an embodiment of the present invention.
Figure 6 is a diagram showing a method in which an electric vehicle charger communication device performs a control service according to an embodiment of the present invention.
Figure 7 is a diagram showing how the charger communication management unit adds communication module and message information of a new OCPP version according to an embodiment of the present invention.

In order to clearly explain the present invention, parts that are not relevant to the description are omitted, and identical or similar components are assigned the same reference numerals throughout the specification.

Hereinafter, with reference to the attached drawings, embodiments of the present invention will be described in detail so that those skilled in the art can easily implement the present invention. However, the present invention may be implemented in many different forms and is not limited to the embodiments described herein.

Hereinafter, communication includes transmission and/or reception.

Figure 1 is a diagram showing an electric vehicle charger communication system 100 according to an embodiment of the present invention.

Referring to FIG. 1, the electric vehicle charger communication system 100 according to an embodiment of the present invention may include an electric vehicle charger communication device 110, an external charger 120, and an external operating system 130.

The external operating system 130 can perform various services by transmitting/receiving information and/or messages with the external charger 120 through the electric vehicle charger communication device 110. According to one embodiment, the external charger 120 may be configured as an electric vehicle charger and may transmit/receive information and/or messages with the electric vehicle charger communication device 110. The external operating system 130 may be configured as a server-like device and may transmit/receive information and/or messages with the electric vehicle charger communication device 110.

Figure 2 is a diagram showing an electric vehicle charger communication device 110 according to an embodiment of the present invention.

The electric vehicle charger communication device 110 according to an embodiment includes a charger communication connection unit 250 configured to receive a monitoring message containing monitoring information from an external charger 120, and a monitoring message from the charger communication connection unit 250. OCPP communication unit 230 configured to - The OCPP communication unit includes a plurality of OCPP communication modules 231, 232, 233, and 234 for each version, and each OCPP communication module for each version receives a monitoring message according to the OCPP version of the external charger. configured to determine whether -, a charger communication message common service unit 220 configured to receive a monitoring message from the OCPP communication unit 230 and generate an operating system message based on the monitoring information, an operating system from the charger communication message common service unit It may include an operating system communication connection unit 210 configured to receive a message and transmit it to an external operating system, and a communication control unit 270.

The electric vehicle charger communication device 110 according to another embodiment of the present invention further includes a charger communication management unit 260, and the charger communication management unit 260 includes an OCPP communication module 231 for each version of the OCPP communication unit 230. It may include an OCPP communication module management module 268 configured to manage 232, 233, 234, and 235).

In the electric vehicle charger communication device 110 according to another embodiment of the present invention, the charger communication management unit 260 includes a common service - OCPP message mapping management module 266; And further includes an OCPP message management module 264, the operating system communication connection unit 210, control request information for the external charger 120 from the external operating system 130 - the control request information is sent to the external charger ( 120) - further configured to receive a first request message containing OCPP version information, wherein the charger communication message common service unit 220 receives the first request message from the operating system communication connection unit 210; , Common service - Based on the contents of the OCPP version information and control request information of the external charger 120 of the control request information from the OCPP message mapping management module 266, the OCPP version message and control request of the external charger 120 Receives mapping information between information, receives message information from the OCPP message management module according to the mapping information, and sends a second request message according to the OCPP version of the external charger based on the message information - the second request message contains control request information. Includes - further configured to generate, and the OCPP communication unit is further configured to receive a second request message from the charger communication message common service unit, and each OCPP communication module for each version sends a second request according to the OCPP version of the external charger. Configured to determine whether to receive the message -, the charger communication connection unit is further configured to receive a second request message from the OCPP communication unit and transmit the second request message to an external charger, and the storage module includes an operating system communication connection unit, It is further configured to receive and store at least one of control request information, a first request message, and a second request message from at least one of the charger communication message common service unit, charger communication management unit, OCPP communication unit, and charger communication connection unit, and the monitoring information includes: May include processing result information for control requests.

The operating system communication connection unit 210 may be configured to exchange messages with the external operating system 130. According to one embodiment, messages can be exchanged with the external operating system 130 through a REST interface. In one embodiment, the operating system communication connection unit 210 includes a REST Server 212 capable of receiving a control message from an external operating system 130 and transmitting a response thereto; and monitoring information transmitted from the external charger 120 - which may include processing result information for a control request transmitted after performing the corresponding control in the external charger 120 - an operating system message containing the external charger 120. It may include a REST Client 214 that can transmit to the operating system 130 and receive a response.

The charger communication message common service unit 220 may be configured to convert messages between the external operating system 130 and the OCPP communication unit 230. Services provided by the charger communication message common service unit 220 can be largely divided into charger monitoring services and charger control services. Here, the service and/or common service may refer to a series of transmission and reception regarding the contents of monitoring or control request information, or may be a program code that provides such.

The charger monitoring service can be configured as shown in Table 1.

Service name detailed description Charger Availability Status
message service - Receive charger availability status information from the OCPP communication department for each version
- Convert charger availability status information into operating system messages and deliver them Heart Beat
message service - Receive charger heartbeat information from OCPP communication department for each version
- Converts charger heartbeat information into operating system messages and delivers them Member authentication request
message service - Receive member authentication request information from the OCPP Communications Department for each version
- Convert member authentication request information into operating system message and deliver it
- Receive authentication result information from the operating system
- The operating system authentication result information is delivered to the member authentication request information.
Forward the corresponding version to the OCPP Communications Department charging status
message service - Receive charging status information from OCPP communication department for each version
- Converts and transmits charging status information into operating system messages Charge amount message service - Receive charger metering information from OCPP communication department for each version
- Convert charger weighing information into operating system messages and deliver them Charger installation (provisioning) 　 Message service - Receive charger installation (provisioning) information from the OCPP communication department for each version - Convert charger installation (provisioning) information into operating system messages and deliver them Parts installation message service - Receive charger parts installation information from OCPP communication department for each version
- Convert charger parts installation information into operating system messages and deliver them Parts status message service - Receive charger component status information from the OCPP communication department for each version
- Convert charger component status information into operating system messages and deliver them Custom message service - Receive customized information from OCPP communications department for each version
- Convert user-defined information into operating system messages and deliver them Firmware version message service - Receive charger firmware version information from OCPP communication department for each version
- Converts charger firmware version information into operating system message and delivers it PnC (Plug and Charge) member authentication message service - Receive PnC member authentication certificate information from the OCPP Communications Department for each version
- PnC member authentication certificate information is converted into an operating system message and delivered Payment message service - Receive payment information from OCPP Communications Department for each version
- Convert payment information into operating system message and deliver it

According to one embodiment, the monitoring information transmitted/received in the electric vehicle charger communication system may include information such as charger availability status, heart beat, member authentication request, charging status, and charging amount in the table above. According to another embodiment, the monitoring information may be information containing processing result information for a control request. Processing result information for control requests is described below.

The charger control service can be configured as shown in Tables 2 to 6.

Service name detailed description diagnostic log
Transfer status handling
message service - Receive charger diagnostic log transmission status processing request information from the operating system
- Check OCPP version information in request information
- The charger communication management department determines the corresponding OCPP version for the service.
Check charger diagnostic log transmission status processing message information
- Charger diagnostic log transmission status processing request information as OCPP message of the corresponding version
Convert and forward to the corresponding version of the OCPP Communications Department
- Result of processing status of charger diagnostic log transmission from OCPP communication department of the corresponding version
receive information
- Charger diagnostic log transmission status processing result information is transmitted to the operating system charger
Availability change handling
message service - Receive charger availability change processing request information from the operating system
- Check OCPP version information in request information
- The charger communication management department determines the corresponding OCPP version for the service.
Check charger availability change processing message information
- Charger availability change processing request information to the corresponding version of the OCPP message
Convert and forward to the corresponding version of the OCPP Communications Department
- Result of processing change in charger availability from OCPP Department of Communications for the corresponding version
receive information
- Information on charger availability change processing results is transmitted to the operating system Charging profile information processing message service - Receiving charging profile information processing request information from the operating system
- Check OCPP version information in request information
- The charger communication management department determines the corresponding OCPP version for the service.
Check charging profile information processing message information
- Charging profile information processing request information is sent to the corresponding version of the OCPP message.
Convert and forward to the corresponding version of the OCPP Communications Department
- Result of processing charging profile information from the OCPP communication department of the corresponding version
receive information
- Transfer of charging profile information processing result information to the operating system Charging profile settings processing message service - Receiving charging profile setting processing request information from the operating system
- Check OCPP version information in request information
- The charger communication management department determines the corresponding OCPP version for the service.
Check charging profile settings processing message information
- Charging profile setting processing request information is sent to the corresponding version of the OCPP message.
Convert and forward to the corresponding version of the OCPP Communications Department
- Result of charging profile setting processing from the OCPP communication department of the corresponding version
receive information
- Transmit charging profile setting processing result information to the operating system

Service name detailed description Remote charging processing
message service start - Receive remote charging start processing request information from the operating system
- Check OCPP version information in request information
- The charger communication management department determines the corresponding OCPP version for the service.
Check remote charging start processing message information
- Remote charging start processing request information is sent to the corresponding version of the OCPP message.
Convert and forward to the corresponding version of the OCPP Communications Department
- Result of remote charging start processing from the OCPP communication department of the corresponding version
receive information
- Transmit remote charging start processing result information to the operating system stop - Receive remote charging interruption processing request information from the operating system
- Check OCPP version information in request information
- The charger communication management department determines the corresponding OCPP version for the service.
Check remote charging interruption processing message information
- Remote charging interruption processing request information is sent to the corresponding version of the OCPP message.
Convert and forward to the corresponding version of the OCPP Communications Department
- Result of remote charging interruption processing from the Department of Communications of OCPP of the corresponding version
receive information
- Transmit remote charging interruption processing result information to the operating system Local authentication list processing
message service - Receive local authentication list processing request information from the operating system
- Check OCPP version information in request information
- The charger communication management department determines the corresponding OCPP version for the service.
Check local authentication list processing message information
- Convert local authentication list processing request information to the corresponding version of the OCPP message.
Convert and forward to the corresponding version of the OCPP Communications Department
- Result of local authentication list processing from the corresponding version of the OCPP communication department
receive information
- Transmit local authentication list processing result information to the operating system Local authentication list version message service - Receive local authentication list version processing request information from the operating system
- Check OCPP version information in request information
- The charger communication management department determines the corresponding OCPP version for the service.
Check local authentication list version processing message information
- Local authentication list version processing request information into an OCPP message for that version.
Convert and forward to the corresponding version of the OCPP Communications Department
- Result of processing the local authentication list version from the OCPP Department of Communications for that version
receive information
- Transmit local authentication list version processing result information to the operating system

Service name detailed description display message
message service - Receive charger display message processing request information from the operating system
- Check OCPP version information in request information
- The charger communication management department determines the corresponding OCPP version for the service.
Charger Display Message Processing Check Message Information
- Charger display message processing request information to the corresponding version of the OCPP message
Convert and forward to the corresponding version of the OCPP Communications Department
- Result of processing charger display message from OCPP communication unit of the corresponding version
receive information
- Transmit charger display message processing result information to the operating system Charging reservation
message service reservation - Receive charger charging reservation processing request information from the operating system
- Check OCPP version information in request information
- The charger communication management department determines the corresponding OCPP version for the service.
Check charger charging reservation processing message information
- Charger charging reservation processing request information is sent to the corresponding version of the OCPP message.
Convert and forward to the corresponding version of the OCPP Communications Department
- Result of charger charging reservation processing from the OCPP communication department of the corresponding version
receive information
- Transfer charger charging reservation processing result information to the operating system cancellation - Receive charger charging reservation processing request information from the operating system
- Check OCPP version information in request information
- The charger communication management department determines the corresponding OCPP version for the service.
Check charger charging reservation processing message information
- Charger charging reservation processing request information is sent to the corresponding version of the OCPP message.
Convert and forward to the corresponding version of the OCPP Communications Department
- Result of charger charging reservation processing from the OCPP communication department of the corresponding version
receive information
- Transfer charger charging reservation processing result information to the operating system charger trigger
information processing
message service - Receive charger trigger information processing request information from the operating system
- Check OCPP version information in request information
- The charger communication management department determines the corresponding OCPP version for the service.
Charger trigger information processing message information confirmation
- Charger trigger information processing request information to the corresponding version of the OCPP message
Convert and forward to the corresponding version of the OCPP Communications Department
- Result of processing charger trigger information from the OCPP communication unit of the corresponding version
receive information
- Transfer of charger trigger information processing result information to the operating system

Service name detailed description Clear charger cache
message service - Receive charger cache deletion processing request information from the operating system
- Check OCPP version information in request information
- The charger communication management department determines the corresponding OCPP version for the service.
Check charger cache deletion processing message information
- Charger cache deletion processing request information is sent to the corresponding version of the OCPP message.
Convert and forward to the corresponding version of the OCPP Communications Department
- Result of charger cache deletion processing from the OCPP communication department of the corresponding version
receive information
- Charger cache deletion processing result information is transmitted to the operating system Charger firmware download message service - Receive charger firmware download processing request information from the operating system
- Check OCPP version information in request information
- The charger communication management department determines the corresponding OCPP version for the service.
Check charger firmware download processing message information
- Charger firmware download processing request information is sent to the corresponding version of the OCPP message.
Convert and forward to the corresponding version of the OCPP Communications Department
- Result of charger firmware download processing from OCPP communication department of the corresponding version
receive information
- Transfer the charger firmware download processing result information to the operating system Charger Diagnostic Request
message service - Receive charger diagnostic request processing request information from the operating system
- Check OCPP version information in request information
- The charger communication management department determines the corresponding OCPP version for the service.
Process charger diagnostic request Check message information
- Process charger diagnostic request and send request information to the corresponding version of OCPP message
Convert and forward to the corresponding version of the OCPP Communications Department
- Result of processing charger diagnosis request from OCPP communication department of the corresponding version
receive information
- Information on charger diagnosis request processing results is transmitted to the operating system charger reset
message service - Receive charger reset processing request information from the operating system
- Check OCPP version information in request information
- The charger communication management department determines the corresponding OCPP version for the service.
Check charger reset processing message information
- Charger reset processing request information is sent to the corresponding version of the OCPP message.
Convert and forward to the corresponding version of the OCPP Communications Department
- Result of charger reset processing from the OCPP communication unit of the corresponding version
receive information
- Transfer of charger reset processing result information to the operating system

Service name detailed description Charger Connector Control Message Service - Receive charger connector control processing request information from the operating system
- Check OCPP version information in request information
- The charger communication management department determines the corresponding OCPP version for the service.
Check charger connector control processing message information
- Charger connector control processing request information to the corresponding version of the OCPP message
Convert and forward to the corresponding version of the OCPP Communications Department
- Result of charger connector control processing from the OCPP communication department of the corresponding version
receive information
- Transfer of charger connector control processing result information to the operating system certification
message service - Deliver the operating system PKI certificate delivered from the operating system to the security management department.
(Save certificate)

According to one embodiment, the control request information transmitted/received from the electric vehicle charger communication system includes a charger diagnostic log transmission status processing request, a charger availability change processing request, a charging profile information processing request, and a charging profile information processing request in the table above. It may be information that has been provided.

According to one embodiment, the processing result information for the control request transmitted/received in the electric vehicle charger communication system includes the charger diagnostic log transmission status, charger availability change processing result, charging profile information processing result, and charging profile setting processing result in the table above. This may include information/

According to one embodiment, the charger communication message common service unit includes at least one service module, and the OCPP communication unit provides service module information in the monitoring message according to the contents of the monitoring information - the service module information is which service module among the service modules sends the monitoring message. It may be further configured to add - including information about whether to receive. In other words, the charger communication message common service unit may be configured to have service modules in charge of each service, so that each service module can transmit/receive messages for its own service and perform message conversion/generation, etc. For example, it may be composed of a monitoring service module 222 and a control service module 224, and each service module may be configured for each service in Tables 1 and 2.

The OCPP communication unit 230 can handle communication with chargers using various versions of the OCPP protocol. The OCPP communication unit 230 may transmit/receive messages with the charger communication connection unit 250 and transmit/receive messages with the charger communication message common service unit 220.

According to one embodiment, the OCPP communication unit 230 may be configured to include a plurality of OCPP communication modules 231, 232, 233, 234, and 235 for each version. Furthermore, each OCPP communication module for each version may be configured to determine whether or not to receive a monitoring message depending on the OCPP version of the external charger 120. The OCPP communication module for each version can communicate with chargers of the corresponding version using the message of the corresponding version. For example, the OCPP communication unit 230 includes OCPP communication modules for each version, including OCPP 1.2 (231), OCPP 1.5 (232), OCPP 1.6 (233), and OCPP 2.0 (234), and OCPP communication for each version. The module can receive its own OCPP version monitoring message and handle communication with the corresponding OCPP version charger.

In addition, each OCPP communication module for each version sends a second request message according to the OCPP version of the external charger 120. The second request message is a message generated by the charger communication message common service unit and includes control request information of the charger. It can be configured to determine whether to receive it. For example, the OCPP communication module for each version may receive the second request message for its respective OCPP version and process communication with the charger of the corresponding OCPP version.

According to one embodiment, information exchange between the OCPP communication unit 230 and the charger communication message common service unit 220 may be configured to operate differently depending on the service, for example, whether it is a monitoring service or a control service. The corresponding service module of the charger communication message common service unit 220 may exchange information with the OCPP communication unit 230 using the common service-OCPP message mapping management information of the charger communication management unit 260.

In the case of charger monitoring service, the OCPP communication module for each version adds service module information to the monitoring message received from the OCPP charger - service module information includes information on which service module among service modules will receive the monitoring message. It can be configured to do so. For example, in the case of a charging status message service, service module information that allows the charging status message service module to receive the monitoring message can be added to the monitoring message. Here, the type of monitoring service can be determined depending on the monitoring information received.

In the case of the control service, control request information is received from the charger communication message common service unit or the corresponding service module, the control request information is transmitted to the charger, and then processing result information for the control request is received from the charger to the charger communication message common service unit. , or it can be transmitted to the corresponding service module. Here, the type of control service can be determined based on control request information.

The OCPP communication unit 230 may be configured to manage the OCPP communication modules 231, 232, 233, 234, and 235 for each version from the OCPP communication module management module 268 configured in the charger communication management unit 260. For example, the OCPP communication module management module 268 can add and expand a new version of the OCPP communication module 235 to the OCPP communication unit 230 to communicate with the charger of the corresponding version.

The OCPP communication module for each version can communicate with chargers of the corresponding version using the message of the corresponding version. The OCPP communication module for each version can transmit/receive messages with the charger communication message common service unit.

The electric vehicle charger communication device 110 according to one embodiment may include a security management unit 240. The security management unit 240 is configured to perform secure communication between the external charger 120 and the electric vehicle charger communication device 110. The security management unit 240 according to one embodiment may include various modules to perform secure communication.

The charger communication connection unit 250 may be configured to communicate with an external charger 120. The charger communication connection unit 250 according to one embodiment may perform SOAP (252) and WebSocket (254) communication for communication with chargers of various OCPP versions. In one embodiment, OCPP 1.2 and OCPP 1.5 may be configured to perform SOAP-based communication, OCPP 1.6 may be configured to perform SOAP and WebSocket communication, and OCPP 2.0 may be configured to perform WebSocket communication.

According to one embodiment, the electric vehicle charger communication device 110 may include a charger communication management unit 260. In one embodiment, the charger communication management unit 260 includes a charger communication message common service management module 262, an OCPP message management module 264, a common service-OCPP message mapping management module 266, and an OCPP communication module management module 268. ) may include.

The charger communication message common service management module 262 may be configured to add, delete, or change service modules 222 and 224 that exchange messages between the external operating system 130 and the OCPP communication unit 230. In the case of the charger monitoring service, for example, a new service module can be added that allows information received from the OCPP communication unit 230 to be converted into an operating system message defined by the external operating system 130. In the case of the charger control service, for example, control request information is received from the external operating system 130 as an operating system message defined in the operating system, and the OCPP version information in the request information is checked and then the common service-OCPP message mapping is managed. Receives information for type conversion into the OCPP version message of the corresponding service from the module 266, receives the corresponding OCPP message information from the OCPP message management module, and converts it to the corresponding OCPP version message based on this, and sends it to the corresponding version of the OCPP communication module. , and a new service module can be added that allows information on the processing result of the control request to be received from the OCPP communication unit of the corresponding version and then transmitted to the operating system.

The OCPP message management module 264 can manage information about messages and formats for each OCPP version, where management may include adding and expanding messages of new OCPP versions. According to one embodiment, when the charger communication message common service unit 220 or the control service module 224 configures the corresponding OCPP version message of the service in order to transmit control request information, the OCPP message management module 264 You can receive, check, and use message information about the OCPP version from .

Common service - OCPP message mapping management module 266 can manage mapping information for each OCPP version for each service, where management may include adding and expanding mapping information between messages and services of a new OCPP version. . According to one embodiment, when the charger communication message common service unit, or control service module 224, configures the corresponding OCPP version message of the service to transmit control request information, the common service-OCPP message mapping management module 266 ), you can receive, check, and use mapping information between the OCPP version message of the external charger and the corresponding service, that is, information for type conversion into an OCPP version message. In one embodiment, what the corresponding service is may be included in the content of the control request information.

The OCPP communication module management module 268 can manage OCPP communication modules for each version of the OCPP communication unit 230. Here, management may include adding and expanding communication modules of new OCPP versions.

When a new OCPP version is introduced, the electric vehicle charger communication device 110 may add and expand a communication module of the new OCPP version, mapping information of messages and services of the new OCPP version, and messages of the new OCPP version, thereby enabling the electric vehicle charger The communication device 110 is capable of transmitting/receiving information for a new version of OCPP charger and service. Therefore, despite the introduction of a new OCPP version, compatibility is possible through simple expansion work without new communication devices or operating system changes.

The electric vehicle charging communication device 110 may include a communication control unit 270. The communication control unit 270 may be configured to control overall communication processing. The communication control unit 270 may include several modules to perform communication processing. The communication control unit according to an embodiment receives monitoring information, monitoring messages, and operation from at least one of the charger communication connection unit 250, the OCPP communication unit 230, the charger communication message common service unit 220, and the operating system communication connection unit 210. It may include a storage module configured to receive and store at least one of the system messages.

Figure 3 is a diagram showing the configuration of a security management unit according to an embodiment of the present invention. The security management unit 240 may include a TLS server module 310, a certificate management module 320, an HTTP security module 330, a security profile management module 340, and a VPN management module 350.

The TLS server module 310 is configured to handle data encryption and decryption and professional exchange tunneling with the TLS client in the charger, and the certificate management module 320 is capable of managing PKI certificates received from the operating system. The HTTP security module 330 is responsible for processing ID/Password access through BASE64 encoding/decoding, the security profile management module 340 can process the security profile defined in OCPP, and the VPN management module 350 is a configuration that can manage chargers connected to VPN.

Figure 4 is a diagram showing the configuration of a communication control unit according to an embodiment of the present invention. The communication control unit according to one embodiment includes an error processing module 410, a storage module 420, a load control module 430, a key generation module 440, an asynchronous Thread module 450, a Queue control module 460, It may include a callback control module 470, a message control module 480, and a log module 490.

The error processing module 410 processes a retransmission mechanism when a message exchange error occurs, and is a function that processes errors by setting processing rules according to error codes.

The storage module 420 is a component that can store information and/or messages with time. The storage module according to one embodiment may be configured to receive and store at least one of monitoring information, a monitoring message, and an operating system message from at least one of the OCPP communication unit, the charger communication message common service unit, and the operating system communication connection unit. The storage module according to another embodiment may receive at least one of control request information, a first request message, and a second request message from at least one of an operating system communication connection unit, a charger communication message common service unit, a charger communication management unit, an OCPP communication unit, and a charger communication connection unit. It may be further configured to receive and store one.

The load control module 430 is a component that transmits a control request message to a Thread when processing a charger control request and executes it in an asynchronous manner. The key generation module 440 is a component that generates a BASE64-based authentication key, and the asynchronous Thread module ( 450) is a configuration that processes charger control requests in an asynchronous manner, and the queue control module 460 is a configuration that controls communication processing based on a queue.

The callback control module 470 can transmit related data at the same time as completing processing for a message request or response, and the message control module 480 can control messages between the charger communication message common service unit and the OCPP communication unit, and log Module 490 may store communication logs.

The operating principle of simultaneous multi-version OCPP communication of the electric vehicle charger communication device 110 can be explained by dividing it into a charger monitoring service and a charger control service.

Figure 5 is a diagram showing a method in which an electric vehicle charger communication device performs a monitoring service according to an embodiment of the present invention.

First, the charger communication connection unit 250 receives a monitoring message from the external charger 120 (S510). Here, the monitoring message includes monitoring information. Next, the communication module for each OCPP version of the OCPP communication unit 230 receives a monitoring message from the charger communication connection unit 250 (S520). OCPP communication modules determine whether to receive messages depending on the OCPP version of the external charger. Preferably, each communication module can be configured to receive a monitoring message of the OCPP version it is responsible for.

Next, the charger communication message common service unit 220 receives a monitoring message from the communication module (S530). According to one embodiment, the charger communication message common service unit 220 includes at least one service module, and the charger service module in charge of the corresponding monitoring service may be configured to receive a monitoring message. Additionally, the storage module 420 may receive and store the monitoring message and/or information from the charger communication message common service unit 220 (S540). Here, the object, transmission subject, and storage step that the storage module 420 stores, unlike what is shown in the drawing, are performed by varying various objects, transmission subjects, and steps as described in the previous description of the configuration of the storage module 420. It can be.

The charger communication message common service unit 220 converts the monitoring message into a message of the operating system (S550) and then transmits it to the external operating system 130 through the REST Client 214 of the operating system communication connection unit 210 (S560). ) can be configured to.

Figure 6 is a diagram showing a method in which an electric vehicle charger communication device performs a control service according to an embodiment of the present invention.

First, the charger communication message common service unit 220 receives a first request message from the external operating system 130 through the REST Server 212 of the operating system communication connection unit 210 (S610). Here, the first request message includes control request information, and the control request information may include OCPP version information of the external charger requesting control and the contents of the control request, that is, the control service. Next, the charger communication message common service unit 220 or the corresponding control service module checks the OCPP version information in the control request information (S615). Next, the storage module 420 receives and stores the control request information and message (S620). Here, as described above, the object stored by the storage module 420, the transmitting subject, and the storage stage may vary.

Next, type conversion information of the control service into the corresponding OCPP version message, that is, mapping information between the OCPP version message and the service, is received and confirmed from the common service-OCPP message mapping management module of the charger communication management unit (S625). Next, message information of the corresponding OCPP version is received from the OCPP message management module 264 of the charger communication management unit 260 and the message configuration is confirmed (S630). Based on this, the control request information is converted into a second request message, which is the corresponding version of the OCPP message (S635).

Next, the OCPP communication module of the corresponding version receives the second request message (S640). Then, the OCPP communication module transmits a second request message containing control request information to the external charger 120 through the charger communication connection unit 250 (S645).

Next, the charger communication connection unit 250 receives a monitoring message from the external charger 120 (S650). Here, the monitoring message includes monitoring information, and the monitoring information includes information on the processing result of the control request. Next, the communication module for each OCPP version of the OCPP communication unit 230 receives a monitoring message containing processing result information for the control request from the charger communication connection unit 250 (S655). Next, the charger communication message common service unit 220 receives a monitoring message from the communication module (S660). Additionally, the storage module 420 may receive and store the monitoring message and information from the charger communication message common service unit 220 (S665). Here, as described above, the object that the storage module 420 stores, the transmission subject, and the storage stage may vary.

The charger communication message common service unit 220 converts the monitoring message into a message of the operating system (S670) and then transmits it to the external operating system 130 through the REST Client 214 of the operating system communication connection unit 210 (S675). ) can be configured to.

Figure 7 is a diagram showing how the charger communication management unit adds communication module and message information of a new OCPP version according to an embodiment of the present invention.

First, a new OCPP version of the message is added to the OCPP message management module 264 of the charger communication management unit (S710). Next, mapping information between the service and the message of the new OCPP version is added to the common service-OCPP message mapping management module 266 of the charger communication management unit (S740). Before this step is performed, it is determined whether there is a service module to perform service for the message of the new OCPP version (S720), and if there is no service module, a new service is added in the charger communication message common service management module 262 (S720). Steps of adding mapping information (S730) and mapping information (S740) may be further included. Next, the OCPP communication module management module 268 of the charger communication management unit 260 adds a new OCPP version of the OCPP communication module (S750). In this process, information from other modules of the charger communication management unit 260 can be used. Next, activate the added service module and/or the new version of the OCPP communication module (S760).

Those skilled in the art to which the present invention pertains should understand that the present invention can be implemented in other specific forms without changing its technical idea or essential features, and that the embodiments described above are illustrative in all respects and not restrictive. Just do it. The scope of the present invention is indicated by the claims described later rather than the detailed description, and all changes or modified forms derived from the meaning and scope of the claims and their equivalent concepts should be construed as being included in the scope of the present invention. .

100: Electric vehicle charger communication system 110: Electric vehicle charger communication device
120: External charger 130: External operating system
210: Operating system communication connection unit 212: REST Server
214: Rest Client 220: Charger communication message common service department
222: Monitoring service module 224: Control service module
230: OCPP Communications Department
231, 232, 233, 234, 235: OCPP communication module by version
240: Security management unit 250: Charger communication connection unit
252: SOAP 254: Websocket
260: Charger communication management unit
262: Charger communication message common service management module
264: OCPP message management module
266: Common service - OCPP message mapping management module
268: OCPP communication module management module 270: Communication control unit
310: TLS server module 320: Certificate management module
330: HTTP security module 340: Security profile management module
350: VPN management module 410: Error processing module
420: storage module 430: load control module
440: Key creation module 450: Asynchronous Thread module
460: Queue control module 470: Callback control module
480: Message control module 490: Log module

Claims (16)

In the electric vehicle charger communication device,
a charger communication connection configured to receive a monitoring message containing monitoring information from an external charger;
OCPP communication unit configured to receive the monitoring message from the charger communication connection unit - the OCPP communication unit includes a plurality of OCPP communication modules for each version, and each OCPP communication module for each version sends the monitoring message according to the OCPP version of the external charger It is configured to determine whether to receive -;
a charger communication message common service unit configured to receive the monitoring message from the OCPP communication unit and generate an operating system message based on the monitoring information;
an operating system communication connection unit configured to receive the operating system message from the charger communication message common service unit and transmit it to an external operating system;
a charger communication management unit including an OCPP communication module management module configured to manage the OCPP communication module for each version of the OCPP communication unit; and
Includes a communication control unit,
The communication control unit receives and stores at least one of the monitoring information, the monitoring message, and the operating system message from at least one of the charger communication connection unit, the OCPP communication unit, the charger communication message common service unit, and the operating system communication connection unit. It is configured to
The charger communication management unit,
Common services - OCPP message mapping management module; and
Further includes an OCPP message management module,
The operating system communication connection unit is configured to receive a first request message containing control request information for the external charger from the external operating system, wherein the control request information includes OCPP version information of the external charger. more organized,
The charger communication message common service unit,
Receiving the first request message from the operating system communication connection unit,
The common service - Mapping information between the OCPP version message of the external charger and the control request information, based on the OCPP version information of the external charger and the contents of the control request information of the control request information from the OCPP message mapping management module. receive ,
Receive message information from the OCPP message management module according to the mapping information,
further configured to generate a second request message according to the OCPP version of the external charger based on the message information, the second request message including the control request information,
The OCPP communication unit is further configured to receive the second request message from the charger communication message common service unit, and each of the version-specific OCPP communication modules determines whether to receive the second request message according to the OCPP version of the external charger. is further configured to determine -,
The charger communication connection unit is further configured to receive the second request message from the OCPP communication unit and transmit the second request message to the external charger,
The storage module of the communication control unit includes the control request information, the first request message, and further configured to receive and store at least one of the second request messages,
The monitoring information includes processing result information for a control request.
delete According to paragraph 1,
The charger communication message common service unit includes at least one service module,
The OCPP communication unit is further configured to add service module information to the monitoring message according to the contents of the monitoring information - the service module information includes information about which service module among the at least one service module will receive the monitoring message. Includes -, device.
According to paragraph 3,
The charger communication management unit further includes a charger communication message common service management module configured to manage the service module of the charger communication message common service unit.
According to paragraph 4,
The charger communication connection unit is configured to communicate with at least one of SOAP and Websocket according to the OCPP version of the external charger.
According to clause 5,
The charger communication management unit further includes a security management unit configured to communicate with the external charger in a secure environment,
The security management department,
TLS server module; Certificate management module; HTTP security module; A device comprising a security profile management module and a VPN management module.
According to clause 6,
The communication control unit,
Error handling module; load control module; Key generation module; Asynchronous Thread module; Queue control module; Callback control module; A device further comprising a message control module and a log module.
delete According to paragraph 1,
The OCPP message management module is further configured so that message information of a new OCPP version can be added,
The common service - OCPP message mapping management module is further configured to allow mapping information between a message of a new OCPP version and control request information to be added.
According to paragraph 1,
The charger communication message common service unit includes at least one service module,
Each of the service modules is configured to determine whether to receive the first request message according to the contents of the control request information.
According to clause 10,
The charger communication management unit further includes a charger communication message common service management module configured to manage the service module of the charger communication message common service unit.
According to clause 11,
The charger communication connection unit is configured to communicate with at least one of SOAP and Websocket according to the OCPP version of the external charger.
According to clause 12,
The charger communication management unit further includes a security management unit configured to communicate with the external charger in a secure environment,
The security management department,
TLS server module; Certificate management module; HTTP security module; A device comprising a security profile management module and a VPN management module.
According to clause 13,
The communication control unit,
Error handling module; load control module; Key generation module; Asynchronous Thread module; Queue control module; Callback control module; A device further comprising a message control module and a log module.
In the electric vehicle charger communication method,
A charger communication connection unit receiving a monitoring message containing monitoring information from an external charger;
A step of the OCPP communication unit receiving the monitoring message from the charger communication connection unit - the OCPP communication unit includes a plurality of OCPP communication modules for each version, and each of the OCPP communication modules for each version performs the monitoring according to the OCPP version of the external charger. Configured to determine whether or not a message will be received -;
A charger communication message common service unit receiving the monitoring message from the OCPP communication unit and generating an operating system message based on the monitoring information;
An operating system communication connection unit receiving the operating system message from the charger communication message common service unit and transmitting the operating system message to an external operating system;
A storage module configured to be included in the communication control unit receives at least one of the monitoring information, the monitoring message, and the operating system message from at least one of the charger communication connection unit, the OCPP communication unit, the charger communication message common service unit, and the operating system communication connection unit. Including receiving and storing,
The operating system communication connection unit receiving a first request message containing control request information for the external charger from the external operating system, wherein the control request information includes OCPP version information of the external charger. ;
The charger communication message common service unit
Receiving the first request message from the operating system communication connection unit;
Based on the OCPP version information of the external charger in the control request information and the contents of the control request information, the OCPP version message of the external charger and the common service configured to be included in the charger communication management unit - OCPP message mapping management module Receiving mapping information between control request information;
Receiving message information from an OCPP message management module configured to be included in the charger communication management unit according to the mapping information;
generating a second request message according to the OCPP version of the external charger - the second request message including the control request information - based on the message information;
The OCPP communication unit receiving the second request message from the charger communication message common service unit - each of the version-specific OCPP communication modules determines whether or not to receive the second request message according to the OCPP version of the external charger. more composed ―;
The charger communication connection unit receiving the second request message from the OCPP communication unit and transmitting the second request message to the external charger;
The storage module receives at least one of the control request information, the first request message, and the second request message from at least one of the operating system communication connection unit, the charger communication message common service unit, the OCPP communication unit, and the charger communication connection unit. Further comprising the step of receiving and storing,
The monitoring information includes processing result information for a control request.
delete

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