磷酸铁锂电池老化研究探讨

doi:10.16628/j.cnki.2095-8188.2023.05.011

电器与能效管理技术 ›› 2023, Vol. 0 ›› Issue (5): 65-71.doi: 10.16628/j.cnki.2095-8188.2023.05.011

磷酸铁锂电池老化研究探讨

曾其权, 张淑兴

中广核研究院有限公司, 广东深圳 518028

收稿日期:2022-09-11 出版日期:2023-05-30 发布日期:2023-07-25
作者简介:曾其权(1982—),男,高级工程师,主要从事储能、氢能和综合能源管理技术的研究工作。|张淑兴(1985—),男,高级工程师,主要从事储能和氢能技术研究。

Research on Aging of Lithium Iron Phosphate Batteries

ZENG Qiquan, ZHANG Shuxing

China Nuclear Power Technology Research Institute Co.,Ltd., Shenzhen 518028, China

Received:2022-09-11 Online:2023-05-30 Published:2023-07-25

摘要/Abstract

摘要：

磷酸铁锂电池的老化主要包括日历老化和循环老化。总结了近些年磷酸铁锂电池老化重要研究进展,梳理了磷酸铁锂电池循环老化机理和影响因素、日历老化机理和影响因素,探讨了磷酸铁锂电池老化的主要影响因素。日历老化主要受运行或存储时间、温度和荷电状态(SOC)的影响。循环老化主要受运行温度、充放电倍率和放电深度影响。磷酸铁锂电池可以基于经典Arrhenius模型开展温度加速老化试验,但加速老化温度不宜超过60 ℃,加速循环倍率不宜超过3 C。为长寿命、高安全的磷酸铁锂电池储能系统设计提供了理论依据和设计参考。

关键词: 磷酸铁锂, 日历老化, 循环老化, 荷电状态

Abstract:

The aging of lithium iron phosphate battery mainly includes calendar aging and cycle aging.The important research progress of aging of lithium iron phosphate batteries is summarized in recent years.The cycle aging mechanism and influencing factors and calendar aging mechanism and influencing factors of lithium iron phosphate batteries are sorted out.The main influencing factors of lithium iron phosphate battery aging is discussed.Calendar aging is mainly affected by operating or storage time,temperature and state of charge (SOC).Cycle aging is mainly affected by operating temperature, charge/discharge rate and depth of discharge.The temperature accelerated aging test can be carried out for LiFePO₄ based on the classical Arrhenius model, but the accelerated aging temperature should not exceed 60 ℃ and the accelerated cycle multiplier should not exceed 3 C.It provides a theoretical basis and design reference for the design of long-life and high-safety LiFePO₄ energy storage system.

Key words: lithium iron phosphate, calendar aging, cycle aging, state of charge (SOC)

中图分类号:

TM912

曾其权, 张淑兴. 磷酸铁锂电池老化研究探讨[J]. 电器与能效管理技术, 2023, 0(5): 65-71.

ZENG Qiquan, ZHANG Shuxing. Research on Aging of Lithium Iron Phosphate Batteries[J]. LOW VOLTAGE APPARATUS, 2023, 0(5): 65-71.

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磷酸铁锂电池老化研究探讨

Research on Aging of Lithium Iron Phosphate Batteries

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