Design Of Battery Management System Based On Energy Bus

With the continuous development of new energy technologies and the increasing awareness of green and low-carbon practices,the energy sector is accelerating its transition towards clean and low-carbon alternatives.Energy storage is crucial as it supports the development of new power systems,with diverse modes and technologies.Renewable energy generation is characterized by its randomness and intermittency,leading to diverse forms of power supply and energy flow directions.Traditional power equipment struggles to meet the requirements of diverse and complex energy control.Distributed energy generation and matching energy storage devices are widely employed.Energy storage battery units play a vital role in the energy bus system,and their battery management systems hold significant research and practical value.This paper focuses on battery management systems and explores various aspects such as system topology,basic principles,and control strategies.The research mainly centers on battery management,charge and discharge control techniques,and state-of-charge(SOC)estimation.The specific contents include: studying the energy bus system structure to determine the overall system design;analyzing the system operating mode and investigating control methods for achieving voltage stabilization and power control in bidirectional DC-DC converters;conducting experimental testing and parameter identification of batteries based on the system’s battery management and charge/discharge control requirements,using the extended Kalman filter method to estimate the battery SOC.A simulation model of the energy bus topology is constructed,and simulation results demonstrate stable operation of the energy bus structure.The mathematical model of the inverter system is established by using MATLAB/SIMULINK software,and the correctness and correctness of the proposed algorithm are verified by experiments.Based on experimental data,an extended Kalman filter SOC estimation model is established,which provides accurate estimation results that meet the design requirements.The specific implementation of the hardware and software for the experimental prototype is designed.An experimental prototype was constructed to carry out charging and discharging experiments on batteries,as well as to run the waveforms in the DC-DC converter.The experimental results are generally in line with the design requirements,and the converter operates in a soft-switching state.These experimental results validate the stability and feasibility of the energy bus battery management system designed in this paper,demonstrating that the designed battery management system and DC-DC converter can be applied to energy bus systems.