Research On Flexible Charging Strategy Of Mobile Energy Storage Charging Vehicle

The development of the new energy automobile industry is of great significance to improving environmental quality and ensuring energy security.As the fastest-growing and most popular vehicle in the field of new energy vehicles in my country,electric vehicles have become a strategic emerging industry in my country.The vigorous development of the electric vehicle industry has promoted the construction of charging station infrastructure.However,the construction of charging stations is affected by various factors such as changes in traffic flow,land planning,charging service methods,and safe operation of the power grid.It is difficult to effectively respond to the surge in charging load.Mobile energy storage charging vehicles are an effective supplementary form of stationary charging equipment,and the emergency charging effect is significant.However,the existing charging strategies of mobile energy storage charging vehicles cannot well meet the charging requirements under multiple constraints.In order to improve the adaptability of mobile energy storage charging vehicles,it is very necessary to conduct in-depth research on their charging strategies.The thesis first introduces the charging service methods of mobile energy storage charging vehicles.At the same time,it introduces the basic structure and parameters of the power battery,summarizes the factors that affect the battery life,and analyzes the causes and elimination methods of battery polarization.In addition,it analyzes and summarizes the basic theories such as the optimal charging current curve of the battery and the queuing theory,which provides a theoretical basis for the study of flexible charging strategies under the mode of scheduled charging service for mobile energy storage charging vehicles.In order to study the problem of flexible charging current,the thesis conducted in-depth research on the optimal charging current curve of the battery and the queuing theory model.Taking into account factors such as the optimal charging current of the battery,the car owner’s expected charging time requirements and the charging service intensity of mobile energy storage charging vehicles,a mathematical model for solving the optimal charging current of the charging service system under multiple constraints is established;the particle swarm algorithm is used to solve the problem.The optimal solution of the model is solved,and the feasibility of the proposed flexible charging strategy is verified through MATLAB programming.The results show that the algorithm can correctly calculate the current optimal charging current of the charging service system.In order to further verify the flexible charging strategy,the paper analyzed the requirements of the charging control system,completed the hardware circuit design of the control system,tested the performance of important circuits,and verified the reliability of the circuit.On this basis,according to national standards,the design of charging control software is completed,which provides necessary conditions for the experimental verification of flexible charging strategy.Finally,the paper builds an experimental verification platform and verifies the flexible strategy.Through laboratory charging platform verification and on-site charging test,the feasibility and effectiveness of the proposed flexible charging strategy are verified.