Design of electric vehicle communication control system based on ISO15118

The charging protocol for domestic electric vehicles is different from that of the European Union and other countries, and a charging communication controller that meets EU standards must be installed before it can be exported to the EU market. If domestic electric vehicle manufacturers independently develop products based on the European standard protocol, they need to change the existing battery management system (BMS) and charging controller. The consistency and interoperability of the protocol are difficult to improve in the short term, and continuous improvement, verification, and optimization are required, resulting in huge research and development time costs. In view of this, domestic MCU and PLC chip were selected to design an electric vehicle communication control system based on ISO15118. It can be converted into PLC communication that meets the European standard ISO15118 protocol and DIN70121 protocol by using GB/T 27930 protocol for CAN communication with domestic electric vehicles. Practical application shows that the system supports PnC, meets the communication security mechanism of ISO15118 protocol, has good compatibility, strong interoperability, low cost, and is convenient and flexible to use.