New energy vehicle electronic control system includes vehicle controller, battery management system, drive motor controller, etc.
01.Vehicle controller VCU
As the central control unit of electric vehicles, the vehicle controller is the core of the entire control system and the control center of each subsystem.
The main function of the VCU is to coordinate and manage the running status of the vehicle, including collecting motor and battery status, collecting accelerator pedal signals, brake pedal signals, actuators and sensor signals, and after making corresponding judgments based on comprehensive analysis of driver intentions, monitor the lower levels. Widget controller action.
02. Drive motor controller
The function of the motor controller is mainly to receive the torque message command from the vehicle controller, and then control the speed and direction of rotation of the drive motor. In addition, during the energy recovery process, the motor controller is also responsible for rectifying the alternating current generated by the auxiliary torque of the driving motor and charging it back to the power battery.
03. Battery management system
Compared with the previous two controllers, the battery management system is relatively "young". Its main functions include: real-time monitoring of battery physical parameters, online diagnosis and alarm, charge-discharge and pre-charge control, balance management and thermal management, etc.
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