| The global promotion and application of electric vehicles is one of the important means to effectively solve the problems of today’s energy crisis and environmental pollution.However,the popularization of electric vehicles has led to an explosive increase in the number of retired power batteries.The so-called decommissioned battery means that as the capacity of the battery decays during use,it will no longer meet the standards for electric vehicles and needs to be decommissioned.In fact,retired batteries still have a large residual value.If they are directly scrapped,they will cause serious waste of resources and irreversible ecological environmental pollution.Therefore,how to carry out the cascade utilization of decommissioned power batteries reasonably and efficiently is a very important academic research topic at present.Studies have shown that retired batteries can be tested,screened and reassembled to be used in energy storage where battery performance is relatively low.Carry out cascade utilization of decommissioned batteries in the field of energy storage,On the one hand,it can reduce waste of resources,reduce environmental pollution,and achieve high-efficiency applications in the full life cycle of power batteries,On the other hand,it can significantly reduce the cost of energy storage systems and optimize energy storage configuration,which has an important role in promoting the efficient and green development of energy storage systems.Based on this,this paper takes the retired power battery of electric vehicles as the research object,Carry out research on optimization planning of decommissioned batteries in the field of energy storage,and the main research results obtained are as follows:(1)Taking the photovoltaic charging station considering the echelon utilization of decommissioned batteries as the research object,based on the formulated system operation strategy,taking the system power balance and the state of charge of the echelon energy storage system as constraints,established a capacity optimization allocation model with the goal of maximizing the annual net income of the entire system.The optimization model is solved by particle swarm algorithm.The analysis of the calculation example shows that the solar storage power station considering the cascade utilization of decommissioned batteries can effectively reduce the construction cost of the energy storage system and improve the economics of the solar storage charging station system.(2)Aiming at the current unscientific and inadequate situation of cascade utilization of decommissioned batteries,in order to tap the potential of cascade utilization of decommissioned batteries in the field of energy storage and reduce resource waste,Based on the different requirements of different scenarios for battery capacity,specifications and other parameters,analyze and evaluate the differences in the available energy sections of electric vehicle charging stations and household cascade energy storage systems,Taking the maximum annual net income of the multi-energy storage system as the objective function,Establish a capacity optimization model considering the cascade utilization of decommissioned batteries in multiple energy storage scenarios. |
