English abbreviation: evecs
Full English name: Electric vehicle electronic control system
Chinese Transliteration: electric control system for electric vehicles
It's the brain of the electric car.
Each subsystem is generally composed of a sensor, signal processing circuit, electronic control unit, control strategy, actuator, self-diagnosis circuit and indicator light. In different types of electric vehicles, there are some differences in the electronic control system, but generally include energy management systems, regenerative braking control systems, motor drive control systems, electric power steering control systems and powertrain control systems. Each subsystem function is not a simple superposition, but a synthesis of each subsystem function to control the electric vehicle.
EMS
The energy management system is the core of new energy electric vehicles, which consists of three parts: power distribution, power limitation and charging control. Its working principle can be simply summarized as: the electronic control unit collects the battery status information and other related information according to the data acquisition circuit, analyzes and processes the data, and forms the final instructions and information to send to the corresponding functional module.
The functions completed by it include maintaining all the battery components of the electric vehicle and making them in the best condition; Collect the operation data of each subsystem of the vehicle for monitoring and diagnosis; Control the charging mode and provide the remaining energy display. Compared with motor control technology, energy management technology is not very mature. How to realize non-destructive battery charging, monitor the charging and discharging state of the battery, avoid overcharging phenomenon, and implement regular real-time detection, diagnosis and maintenance of the battery to ensure the normal and reliable operation of the battery to the maximum extent is the direction of many scholars are studying.
In the energy management system, the reliability of data acquisition module, the accuracy of residual energy estimation module and the safety management module need to be further improved.