Technical Paper
Research on the Power-on and Power-Off Control and Propulsion Control Method in Hybrid and Electric Vehicles
2024-04-09
2024-01-2787
The traditional car's power-up and power-down sequence is only designed for 12V low-voltage system, which is harmless to human body and does not involve the functional safety of the vehicle. The existing power-up and power-down technologies for high-voltage systems (above 220V) are mostly designed for pure electric vehicles, plug-in hybrid electric vehicle, and non-plug-in hybrid electric vehicle. There is no one process that is applicable to EV, PHEV, and HEV, and it rarely involves the power-up and power-down sequence of one-key start and remote start, and for the power-down delay problem when there is battery cooling and motor cooling request, the battery failure, DCDC failure, collision, low battery SOC, the active power-down sequence problem when the external charging gun is connected, and the sequence problem when the controller resets the fault.