锂离子电池耐过充性的研究进展

Research progress in overcharge resistance performance of Li-ion batteries

在电池串、并联使用过程中,锂离子电池的耐过充性在其正常运行时,发挥着重要作用。概述了过充电时电池内部的反应机理和提高电池耐过充性的措施。研究表明:建立内在的过充保护机制,选择具有良好热稳定性的正极材料,可以提高电池的耐过充性。采用适当的充电模式,避免高倍率充电,可以防止电池爆炸。

During the application of the series-parallel connection of batteries, the overcharge resistance performance of Li-ion batteries paid an important role for the normal operation. The internal reaction mechanism and protection means of the battery during overcharge were summarized. Research results indicated that the establishment of internal protect-mechanism and selection of proper cathode material with good thermal stability could improve the overcharge resistance performance of the battery. A proper charging model and avoiding of high rate charging might overcome the explosion of the Li-ion batteries.