钛酸锂电池在兆瓦级储能系统中的应用分析

摘要

Compared with traditional lithium-ion battery, a battery using lithium titanate anode shows the performance of fast charging and high rate discharge capability, long calendar life, while the cost per A·h is relatively high. It analyses the requirements of a typical power-type MW-class energy storage system for the scope of the C-rate and capacity. Considering the advantages of lithium titanate battery for high power applications, it is concluded that obvious less high-rate lithium titanate battery is needed in a power-type system compared with traditional lithium-ion battery. It can translate into the competitive advantage of the energy storage system.%相对于传统型的锂离子电池，钛酸锂电池具有充放电响应速度快、倍率特性好、寿命长等优点，但钛酸锂电池单位容量的成本较高。本文从储能系统应用需求层面分析典型功率型储能系统对电池倍率和容量的要求，结合钛酸锂电池的特点，得出高倍率的钛酸锂电池应用于功率型储能系统相对于能量型锂电池，可以大幅度减少电池配置数量的结论，因此可发挥钛酸锂电池的竞争优势。