A new method to determine the heating power of ternary cylindrical lithium ion batteries with highly repeatable thermal runaway test characteristics
A new method to determine the heating power of ternary cylindrical lithium ion batteries with highly repeatable thermal runaway test characteristics
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DOI：
10.1016/j.jpowsour.2020.228503
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发表时间：
2020-10
影响因子：
9.2
通讯作者：
Liu Lei;Chunjing Lin;Bin Fan;F. Wang;L. Lao;P. Yang
中科院分区：
文献类型：
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作者：
Liu Lei;Chunjing Lin;Bin Fan;F. Wang;L. Lao;P. Yang
提出了一种基于统计原理确定具有高度可重复热失控测试特性的三元圆柱锂离子电池加热功率的新方法。通过选择锂离子电池加热触发热失控过程的关键参数，如加热时间、热失控温度等，以多次测试中的标准差系数作为评估重复性的依据，确定高重复性热失控测试结果的加热功率。对四种典型三元圆柱锂离子电池进行了系统的实验研究，提出了一种基于电池额定能量和重量的加热功率计算方法。结果表明，该方法能够有效保证圆柱电池热失控测试的重复性。该方法简单，对于三元圆柱锂离子电池热失控发热功率的选取具有独创性和创新性。研究结果也可为其他类型锂离子电池加热功率的选择提供参考。
A new method to determine the heating power of ternary cylindrical lithium ion batteries with highly repeatable thermal runaway test characteristics is proposed based on statistical principles. By selecting the key parameters for the process of heating-triggered thermal runaway of a lithium ion battery, such as the heating time and thermal runaway temperature, the standard deviation coefficients in multiple tests are used as the basis for evaluating the repeatability and determining the heating power of the highly repeatable thermal runaway test results. A systematic experimental study of four typical ternary cylindrical lithium ion batteries is carried out and a method for calculating the heating power based on the rated energy and weight of the battery is proposed. The results show that this method could effectively ensure the repeatability of the thermal runaway test for cylindrical batteries. The method is simple, original and innovative for the selection of the thermal runaway heating power of ternary cylindrical lithium ion batteries. The results also serve as a reference to select the heating power for other types of lithium ion batteries.