Research And Design Of Battery Energy Storage Management System Based On Photovoltaic Generation Mode

With the rapid development of science and technology and the continuous advancement of society,people's living standards and consumption concepts have also been continuously improved.At the same time,people are facing a series of serious environmental pollution and climate deterioration problems such as lack of energy,air pollution,and rising global temperatures.Therefore,the development and utilization of renewable new energy has become the focus of global attention.In order to solve the serious problems of energy depletion and improvement of environmental pollution,all countries have made great efforts to develop green energy-related technologies such as solar energy,wind energy and water energy,and promote harmony between man and nature.In recent years,solar energy technology has been developing increasingly.Solar energy is a special natural resource.Due to the unstable factors such as climate and region,it has brought great challenges to photovoltaic power generation technology.Key issues such as how to improve the conversion efficiency and energy efficiency of photovoltaic modules,extend battery life,and enhance system safety and stability have always been the research hotspots of photovoltaic power generation.The photovoltaic energy storage link is the key to photovoltaic power generation.Based on the analysis of the predicted output power of PV modules and user demand power,this paper proposes a good system energy management scheme under the Internet mode,researches and designs the battery charge and discharge control circuit,and realizes intelligent management of battery energy storage.This paper studies and designs a battery energy storage system based on photovoltaic power generation mode.The system adopts embedded ARM+Linux,QT interface design,SPI communication,power electronic converter and other technologies.It is mainly composed of the upper computer with ARM controller as the core,the battery energy storage control circuit and the battery pack.In the Internet mode,the host computer receives the predicted output power of the PV modules and user load power transmitted from the control center.And carrys out data analysis,creates an energy management solution,and performs SPI communication with the lower computer in real time.Receives and displays battery status,provides a friendly human-computer interface.The battery energy storage control circuit mainly receives the control command of the upper computer to realize the charging and discharging function of the battery,and prevents the occurrence of abnormal problems such as excessive battery discharge and high temperature.The battery pack stores excess energy,and when the system is low on energy,the energy is released to ensure the normal operation of the system.The main work completed in this paper includes the design and manufacture of the battery energy storage control circuit,the interface design of the host computer system,and the realization of functions such as SPI communication and energy management,and debugging,data recording and analysis.The system realizes efficient energy management decisionmaking and safe and reliable battery charging and discharging functions,while alleviating the grid dispatching pressure and avoiding the “discarding phenomenon”.