钛酸锂电池在绝热环境中循环的热响应特性（英文）

Thermal response of lithium titanate battery during cycling under adiabatic condition

钛酸锂电池广泛应用于储能系统,其安全性也备受关注。采用加速量热仪与电池循环仪联用技术,对钛酸锂电池在循环过程中的热响应情况进行了研究。研究表明,测试电池在放电和充电阶段均有明显的小幅度温升现象。通过测试电池在不同倍率下的产热情况,发现电池在各循环阶段的绝热产热量与循环倍率成正比,其热失控危险性也随着循环倍率的增大而增加。

Large scale lithium ion battery is applied in energy storage system of power grid, and the thermal safety of lithium titanate batteries attaches much attention. In this work, thermal response of lithium titanate battery during cycling was investigated by employing an accelerating rate calorimeter combined with multi-channel battery cycler. It was found that temperature rise exists in both discharging and charging processes, while its magnitude is small. By testing battery at different cycle rates, it was found that with the increase of cycle rate, the heat generation under adiabatic condition is directly proportional to the cycling rate, and the thermal runaway risk of battery is increasing too.