动力电池荷电状态(SOC)估算方法综述

Summary of methods for state of charge estimation of power batteries

在动力电池管理系统(BMS)中动力电池SOC评估是最为重要的作用之一。系统中的大多数功能都依赖于动力电池SOC评估的结果。所以准确估算动力电池SOC,有利于保护电池,防止电池过充或过放,提高电池的寿命,达到节约能源的目的。文章通过对SOC评估的当前各种方法的分类综述,并介绍了最新的研究成果,提出了SOC未来的发展方向。

Power battery SOC evaluation is one of the most important roles in the Power Battery Management System(BMS). Most of the functions in the system depend on the results of the power battery SOC evaluation. Therefore, accurate estimation of the power battery SOC is conducive to protecting the battery, preventing overcharging or overdischarging of the battery, improving the life of the battery, and achieving energy conservation. This paper summarizes the current classification of various methods of SOC assessment, and introduces the latest research results, and proposes the future development direction of SOC.