Faculty of Transport, Electrical Engineering and Computer Science, Kazimierz Pulaski University of Technology and Humanities in Radom, 26-600 Radom, Poland.
Sensors (Basel). 2023 Jan 9;23(2):753. doi: 10.3390/s23020753.
Batteries and energy stores built with lithium-ion cells are potentially dangerous and can cause fires that are difficult to extinguish. Reducing the intensity of the fires and extending the time of their development may be of great importance for improving safety. The aim of this work is to examine the influence of the state of charge (SOC) of a cell on susceptibility to ignition, and to analyze the course of the burning process. For this purpose, a special measuring station was built, where ignition was initiated and the course of combustion was observed. During the measurements, energy was supplied by heating a cell from the outside with a resistance heater while at the same time thermally insulating the cell from the environment. The measures of the course of the fire were the amount of energy supplied to the cell before ignition and the temperature changes during the fire. The tests proved the existence of significant differences in the amount of energy causing the ignition of cells. These differences result from changes in the SOC. Quantitative results are presented. The existence of differences in susceptibility to ignition can be used to change the construction of control algorithms for battery management systems (BMSs).
使用锂离子电池制造的电池和储能器具有潜在的危险性，可能会引发难以扑灭的火灾。降低火灾强度并延长火灾发展时间对于提高安全性可能非常重要。本工作的目的是研究电池的荷电状态（SOC）对点火敏感性的影响，并分析燃烧过程的过程。为此，建立了一个特殊的测量站，在该测量站中，通过外部的电阻加热器加热电池来引发点火，并观察燃烧过程。在测量过程中，通过对电池进行隔热的同时从外部通过电阻加热器为电池供电来提供燃烧能量。火灾过程的度量包括点火前供给电池的能量量以及火灾过程中的温度变化。测试证明了引起电池点火的能量量存在显著差异。这些差异源于 SOC 的变化。给出了定量结果。点火敏感性的差异的存在可用于改变电池管理系统（BMS）的控制算法的结构。
