Design and simulation of a hybrid energy management system for a photovoltaic-lithium battery
FU Zehao
HEI Yuekai
ZHANG Qiang
Abstract：A hybrid energy management system combining photovoltaic cells and lithium batteries is proposed to address the problems of difficult charging and short range of traditional photovoltaic energy vehicles.This system aims to achieve automated management under complex environmental conditions.In MATALB-Simulink,a hybrid energy system model integrating a photovoltaic model and a lithium battery model are developed.The maximum power point tracking(MPPT)algorithm is employed to enhance the conversion efficiency of solar energy,while the proportional integral controller and the bi-directional DC/DC controller are utilized to optimize the conversion efficiency of solar energy.The effect of the photovoltaic power on the charging of the lithium battery under different irradiance is simulated and analyzed,and the responsiveness of the energy management strategy under specific environmental conditions is evaluated.The simulation results show that the system can charge the lithium battery when there is sufficient light,and discharge the lithium battery when there is weak light,according to the demand of electric vehicles.MPPT algorithm improves the utilization rate of solar energy under complex environmental conditions,the system is able to realize efficient energy management and improve the stability and robustness of the system.
Keywords：photovoltaic celllithium batteryirradianceSOCelectric vehicle
Publication Date：2025-01-30
Online Publishing Date：2026-05-22(First online date of this platform, not the publication date of the document)
Pages：7( 32-37,44 )