Expanding existing Vehicle-to-Everything (V2X) Communication to transmit Electric Vehicle Data to Local Energy Management Systems

Abstract

In order to use the flexibility offered by large energy storages like pooled electric vehicles (EV) in districts and neighborhoods, novel options of energy management between vehicle and buildings have to be developed. The primary goal is to prevent the existing electrical infrastructure from overcharging and to maximize locally generated renewable energy consumption. Therefore, the EVs have to communicate their remaining storage capacity, destination, distance to the charging infrastructure, state of health and other parameters to the district energy management (DEM), to enable the DEM to decide on optimal energy flows. This paper depicts the procedure that was developed to facilitate communication between an EV and a DEM with the aim of enhancing flexibility in the energy use. A controller area network (CAN) reader was used to extract sensor data via the on-board diagnostics (OBD) interface, and to convert the data flow to a JSON format. A vehicle-toeverything (V2X) capable communication device was used to transmit this data via Message Queuing Telemetry Transport (MQTT) protocol to an InfluxDB time-series database for access by the DEM. A communication architecture and message format to transmit data between EV and DEM based on V2X-Facility messages is eventually proposed.