For the control system of plug-in hybrid electric vehicle, it is necessary to carry out detailed layering and planning of its vehicle control module (HCU), power system and safety system.
In general, there are many types of topological structures of communication networks, and branch lines are complex and cumbersome, while buses often have strong detection and correction capabilities, good implementation signals, and guaranteed reliability. They can effectively judge faulty nodes and automatically correct simple errors. Therefore, the communication network The CAN network structure designed as a bus can meet the requirements of the timeliness and reliability of information transmission. According to the principle of system layered control, the topology diagram of parallel hybrid CAN communication structure is designed.