Abstract:

In order to adapt the rapid development of electronics in hybrid electric vehicle, a hybrid power system communication protocol was designed based on the requirements of multi\|energy power train control system of hybrid electric vehicle.CAN(Controller Area Network) bus standard was used to complete the connection of control units in system and SAE J1939 protocol was used on the software to complete the assembly and transmission of data, and the conversion between CAN protocol and J1939 protocol was conducted. Simulation results showed that the designed communication protocol can organically combine data communication of physical layer and data link layer with information communication of application layer, it is simple and efficient, has good application prospect.

Key words: hybrid electric vehicle(HEV), controller area network(CAN) bus, SAE J1939 protocol, network communication protocol