Energy-efficient energy management system (EMS) The energy distribution and power control of a complete vehicle is the core of a hybrid electric vehicle. Since hybrid electric vehicles have two energy sources, gas generators and power batteries, how to coordinate the work between them is the key to improving vehicle efficiency, reducing vehicle fuel consumption, and improving vehicle dynamics. The EMS of the hybrid electric vehicle is to control the coordination of turbine generators, battery packs, and inverters based on the driving requirements of the vehicle to ensure low emissions with high efficiency. In a high-precision battery management system (BMS) hybrid electric vehicle, the power battery plays a role in power peaking. When the car starts, accelerates and climbs, the battery pack provides extra energy. When the car brakes, the battery pack absorbs feedback energy when going downhill. This ensures the efficiency of the entire system as much as possible and reduces emissions. The BMS monitors the charge and discharge parameters such as voltage, current, and temperature of the battery pack. When there is a problem with the battery, the necessary measures such as ventilation, balance, reduction of charge and discharge current, shutdown, and external supplemental electricity are taken accordingly to protect the battery and increase the battery life. Its other important function is to measure the battery capacity (SOC), pass the data bus to the EMS, as a base point for vehicle control and achieve high output voltage accuracy and current accuracy, high temperature measurement accuracy, and effective monitoring of battery operation. The purpose of temperature is to ensure the safe operation of the power battery. The high-power vector control frequency converter controls the precise speed control of the motor under the coordination of the energy management system, thereby enabling the driver to operate the continuously variable-speed large passenger car with ease. The control system is convenient and quick to operate. The hybrid electric vehicle passes the man-machine interface, accepts the driver's instruction, and automatically completes the monitoring, diagnosis, and protection of the entire vehicle, ensuring safe operation and convenient and easy driving. After the successful development of the hybrid electric bus, it has received extensive attention from the government, the media and people from all walks of life.
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The key to improving vehicle efficiency, reducing vehicle fuel consumption and improving overall vehicle dynamics