不同触发条件下的钛酸锂电池热失控特性研究

以两款商用的、不同容量、不同封装形式的钛酸锂电池为研究对象，利用过充、针刺、加热的方式进行了热失控触发的实验研究。通过对实验结果的归纳与总结，发现对于钛酸锂电池，同样的电流激励下，其在过充期间的产热更为明显；针刺方向与电池封装形式对热失控触发存在较大影响；过充电池在相同功率下的加热热失控所需时间远远小于满电态电池。

Research on the thermal runaway characteristics of lithium titanate batteries under different trigger conditions

Two commercial lithium titanate batteries with different capacities and different packaging forms were taken as the research object, the experimental study of thermal runaway triggering was carried out by means of overcharging, acupuncture and heating. Through summary of the experimental results, it is found that for lithium titanate batteries, under the same current excitation, the heat generation during the overcharge period is more obvious. Piercing direction and battery packaging have greater impact on the triggering of thermal runaway. The time required for an overcharged battery to run away of heating under the same power is much shorter than that of a fully charged battery.