近年来，随着对运营可靠性和节能环保要求的不断提高，以及新能源储能技术的不断提升，车载储能技术在轨道交通机车车辆的应用得到了快速发展。钛酸锂电池凭借较高的能量密度、宽温度范围、长循环寿命、高安全可靠性已经开始在城市轨道交通中推广应用。以钛酸锂电池储能技术为核心，从钛酸锂电池的发展、性能特点及应用场景几个方面分析了钛酸锂电池在轨道交通中的适用性，阐述钛酸锂电池成组过程中的技术问题，最后，面向未来大规模长时间运行的应用场景，从钛酸锂电池的寿命评估、车载储能的优化匹配及高效能量管理、基于离线/在线的全寿命周期电池数据分析3个角度，对钛酸锂应用存在的问题和研究热点进行总结和展望。

In recent years, with the continuous improvement of operation reliability, energy saving, and environmental protection requirements, as well as the continuous improvement of new energy storage technology, the application of on-board energy storage technology in rail transit rolling stock has rapidly developed. Owing to their high energy density, wide temperature range, long cycle life, and high safety and reliability, lithium titanate batteries have been widely used in urban rail transit. Based on the energy storage technology of lithium titanate batteries, this study analyzes the applicability of these batteries in rail transit from the aspects of development, performance characteristics, and application scenarios, and expounds the technical problems in the process of lithium titanate battery grouping. Finally, facing the application scenarios of large-scale and long-time operation in the future, the aspects of life evaluation, performance characteristics, and application scenarios of lithium titanate batteries are also analyzed. The existing problems and research topics in the application of lithium titanate are summarized and prospected from three aspects: optimization matching, efficient energy management of vehicle energy storage, and data analysis of off-line/on-line battery life cycle.

U231

国家自然科学基金(52007006)