Abstract The self-heating effect and pressure-blasting potential of a C/LiNixMnyCo1-x-yO2 (NMC) lithium battery were evaluated using adiabatic calorimetry. Such batteries are widely used in electric vehicles. Various states of charge (SoCs) of NMC battery modules connected in series and parallel circuits were examined to investigate the exothermic characteristics and thermal explosion energy under an open-circuit voltage (OCV) state. The heat generation and thermal explosion in various NMC battery modules were compared. The runaway reaction inside the cell and pressure dissipating out of the battery casing were assessed. Thermal runaway and explosion occur in a chargeable battery at an OCV state when the battery module fails or heats to an elevated temperature. Various SoCs of NMC modules were tested to measure the variances in temperature and pressure under adiabatic conditions. Electrochemical and chemical reaction kinetics and calorimetric test data from thermal runaways of various NMC modules were evaluated to create a battery thermal explosion energy model including enthalpy change and work.

中文翻译：

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基于热力学分析的串联和并联NMC锂电池模块热爆炸能量评估

摘要 使用绝热量热法评估了 C/LiNixMnyCo1-x-yO2 (NMC) 锂电池的自热效应和爆破电位。这种电池广泛用于电动汽车。研究了串联和并联连接的 NMC 电池模块的各种充电状态 (SoC)，以研究在开路电压 (OCV) 状态下的放热特性和热爆炸能量。比较了各种 NMC 电池模块的发热和热爆炸。评估了电池内部的失控反应和电池外壳外的压力消散。当电池模块发生故障或加热到升高的温度时，处于OCV状态的可充电电池会发生热失控和爆炸。测试了 NMC 模块的各种 SoC，以测量绝热条件下温度和压力的变化。评估了来自各种 NMC 模块热失控的电化学和化学反应动力学以及量热测试数据，以创建包括焓变和功的电池热爆炸能量模型。