储能锂电池运行状态综合评估指标研究

随着锂电池储能技术不断完善，国内外锂电池储能电站不断增多，储能锂电池运行情况越来越受到重视。以运行数据为基础，结合理论分析，研究了电池电压极差、电池电压标准差系数、电池温度极差、SOE极差、功率-SOE相关度、运行充放电效率等储能锂电池运行状态评估指标，并根据指标之间的内在联系，对评估指标体系进行了综合评价。研究结果表明，上述指标能有效评估储能锂电池运行状态，对于及时发现电池故障，合理安排电池检修维护具有指导意义。

Research on Evaluation Indicators for a Comprehensive Assessment of Operating Status of Lithium Battery Energy Storage

With the continuous improvement of lithium battery energy storage technology and increased number of lithium battery energy storage stations in operation at home and abroad, the operating status of lithium battery energy storage has attracted increased attention. Based on the operational data and theoretical analysis, this paper studies a number of evaluation indicators for measuring the operating status of lithium energy storage, including the range of battery voltage, the coefficient of standard deviation of battery voltage, the range of battery temperature, the range of SOE, the degree of correlation between power and SOE, the charge-discharge efficiency. The paper provides a comprehensive assessment of the evaluation indicator system based on the internal relationship among the indicators. The results show that these indicators can be used to assess the operating status of lithium battery energy storage effectively, and applied to identify battery fault and guide the arrangement of battery inspection and maintenance.