Research And Design Of Supercapacitor-battery Hybrid Energy Storage Device For Electric Vehicles

The emission of automobile exhaust caused a decline in air quality,which had an impact on people's quality of life.Therefore,the automotive industry is undergoing a transformation from the heat engine to the motor.As an energy storage device of an electric vehicle,the battery has the defects of its inherent characteristics that restrict the development of the electric vehicle.The hybrid energy storage device of the super capacitor and the battery can improve the deficiency of the single battery energy storage device.This subject has been studied and designed for a supercapacitor-battery hybrid energy storage device.This article first introduces the research significance of the super-capacitor-battery hybrid energy storage device for electric vehicles,the technical status and development trend of electric vehicle energy storage devices.Second,it describes and analyzes the core components of the super-capacitor-battery hybrid energy storage device for electric vehicles,and sets up simulation models for the drive motors,super capacitors,and lithium batteries in the MATLAB/Simulink environment.Based on the research and analysis of the control strategy for the super-capacitor-battery hybrid energy storage device of the electric vehicle,a hybrid energy storage device control strategy based on the fuzzy control algorithm is proposed and designed.And build the simulation model of controlled parameters in MATLAB environment.The simulation model in MATLAB/Simulink was embedded in the ADVISOR software to simulate the entire vehicle,and the hybrid energy storage device was verified to improve the acceleration performance of the electric vehicle and improve the braking energy recovery efficiency.Finally,the hardware circuit of the electric vehicle model of the super capacitor-battery hybrid energy storage device was designed and the model of the electric vehicle wascompleted.LabVIEW-based electric car model data acquisition and interface display programs were developed.The actual acceleration of the acceleration performance of the hybrid electric vehicle model and the improvement of the braking energy recovery efficiency are verified.