Electrical vehicle charger communications and control
Systems and methods for controlling electric vehicle chargers using central control consoles for controlling and communicating with industrial equipment. The electric vehicle chargers operate as clients in a client-server configuration with a dedicated OCPP server. The OCPP server communicates with a control console using either of two communications paths—one path uses a direct HTTP connection with the control console. For this path, the control console operates as a web-enabled client. For the other path, multiple communications protocols are used and conversions between these protocols are effected using a conversion module and a MODBUS server. The MODBUS server communicates with the OCPP server. The MODBUS server also communicates with the control console by way of the conversion module and a control server. The control console is thereby able to control multiple pieces of industrial equipment along with the electric vehicle chargers without needing to be compliant with the OCPP protocol.
1. A system for controlling a plurality of chargers for electric vehicles, the system comprising:
a first server comprising an Open Charge Point Protocol (OCPP) server, said server being for communicating with said plurality of chargers using a first communications protocol, said first server also being for communicating with a controller component using a second communications protocol;
a second server comprising a MODBUS TCP/IP server, said second server being for communicating with a controller server using a third communications protocol, said controller server being for controlling a plurality of industrial equipment using a fourth communications protocol; and
a conversion module comprising a programmable logic controller (PLC), said conversion module being for converting communications between said third communications protocol and said fourth communications protocol, said conversion module being coupled to a piece of industrial equipment;
said piece of industrial equipment receiving control commands from said controller server using said fourth communications protocol;
wherein said first communications protocol is for controlling said plurality of chargers;
said second communications protocol is for communicating with web-enabled clients;
said controller component communicates with said controller server using said fourth communications protocol and said controller component is for controlling said plurality of industrial equipment through said controller server; and
said first server and said second server communicate with each other to pass commands and data between one another to thereby pass said commands and data to and from said plurality of chargers;
wherein said first communications protocol is an Open Charge Point Protocol (OCPP) communications and control protocol;
wherein said third communications protocol is a MODBUS TCP/IP communications and control protocol;
wherein said fourth communications protocol is an Open Platform Communications (OPC) communications and control protocol.
2. The system according to claim 1 , wherein said second communications protocol is a Hypertext Transfer Protocol (HTTP).
3. The system according to claim 2 , wherein said controller component comprises a web client for communicating with said first server by way of standard web server commands.
4. The system according to claim 1 , wherein said industrial equipment includes programmable logic controllers.
5. The system according to claim 1 , wherein said controller server comprises at least one OPC DA/UA server.
6. The system according to claim 5 , wherein said controller component is an OPC DA/UA client.
7. A system for controlling a plurality of chargers for electric vehicles, the system comprising:
a first server comprising an Open Charging Point Protocol (OCPP) server, said first server being for communicating with said plurality of chargers using a first communications protocol, said first server also being for communicating with a controller component using a second communications protocol; and
a second server comprising a MODBUS TCP/IP server, said second server being for communicating with a controller server using a third communications protocol, said controller server being for controlling a plurality of industrial equipment using a fourth communications protocol; and
wherein said first communications protocol is for controlling said plurality of chargers;
said second communications protocol is for communicating with web-enabled clients;
said controller component communicates with said controller server and said controller component is for controlling said plurality of industrial equipment through said controller server; and
said first server and said second server communicate with each other to pass commands and data between one another to thereby pass said commands and data to and from said plurality of chargers;
wherein said first communications protocol is an Open Charge Point Protocol (OCPP) communications and control protocol;
wherein said third communications protocol is a MODBUS TCP/IP communications and control protocol;
wherein said fourth communications protocol is an Open Platform Communications (OPC) communications and control protocol.
8. The system according to claim 7 , wherein said controller component communicates with said controller server and with said plurality of industrial equipment using a communications protocol different from said first and second communications protocols.
9. The system according to claim 7 , wherein said second server communicates with said controller server using a communications protocol different from said first and second communications protocols.
10. The system according to claim 7 , wherein said second communications protocol is a Hypertext Transfer Protocol (HTTP).
11. The system according to claim 7 , wherein a conversion module comprising a programmable logic controller (PLC) is used in said system to convert between communications protocols other than said first and second communications protocols.