电力勘测设计Issue(12)：1-7,39,8.DOI:10.13500/j.dlkcsj.issn1671-9913.2025.12.001
电力储能用磷酸铁锂电池不同温度与倍率下的性能研究
Research on the Performance of LiFePO4 Cells for Electrical Energy Storage at Varied Temperatures and C-Rates
摘要
Abstract
Temperature and C-rates are the key factors affecting battery performance.The 314Ah lithium iron phosphate(LFP)battery for electrical energy storage was taken as the research object,and comparative experiments were carried out by combining multiple temperatures(25℃,45℃,5℃)and C-rates(1P,2P,4P)based on the national standard of GB/T 36276-2023 Lithium ion battery for electrical energy storage.The results show that LFP batteries have high charging and discharging energy efficiency at high temperatures,and the performance is obviously limited at low temperatures.LFP batteries have good stability when charging and discharging at different C-rates.In low-current operation,the anode lithium intercalation process is easier than de-intercalation,and the discharge temperature rise is slightly higher than the charging process,but the overall temperature rise does not exceed 3℃.In high-current operation,the polarization and thermal effects of the battery are significantly enhanced,temperature rise during charging is more pronounced.In the design of multiplier-type energy storage systems,it is recommended to focus on optimizing the temperature control strategy in the charging phase to balance efficiency and safety.This study provides experimental basis and optimization direction for the application of LFP batteries for energy storage under complex working conditions.关键词
储能用锂离子电池/磷酸铁锂/倍率/温升Key words
energy storage lithium-ion battery/LFP/C-rate/temperature rise分类
能源科技引用本文复制引用
仇心怡,郭慰问,戚宏勋,宋旭鹏,刘艳艳,黄磊..电力储能用磷酸铁锂电池不同温度与倍率下的性能研究[J].电力勘测设计,2025,(12):1-7,39,8.基金项目
中国电力工程顾问集团有限公司科技项目"电力储能用锂离子电池特性研究及智能化检测平台构建"(DG2-D03-2024). （DG2-D03-2024）
