A 1D electrochemical-thermal model is developed to characterise the behaviour of a 53 Ah large format pouch cell with LiNi_xMn_yCo_1-x-yO₂ (NMC) chemistry over a wide range of operating conditions, including: continuous charge (0.5C-2C), continuous discharge (0.5C-5C) and operation of the battery within an electric vehicle (EV) over an urban drive-cycle (WLTP Class 3) and for a high performance EV being driven under track racing conditions. The 1D model of one electrode pair is combined with a 3D thermal model of a cell to capture the temperature distribution at the cell scale. Performance of the model is validated for an ambient temperature range of 5$\mathit{°C}$–45$\mathit{°C}$. Results highlight that battery performance is highly dependent on ambient temperature. By decreasing the ambient temperature from 45 °C to 5 °C, the available energy drops by 17.1% and 7.8% under 0.5C and 5C discharge respectively. Moreover, the corresponding power loss is found to be: 5.23% under the race cycle as compared with 7.57% under the WLTP drive cycle. Formulation of the model is supported by a comprehensive set of experiments, for quantifying key parameters and for model validation. The full parameter-set for the model is provided ensuring the model is a valuable resource to underpin further research.

建立一维电化学热模型，以表征在广泛的工作条件下具有LiNi _x Mn _y Co _1-xy O ₂（NMC）化学性质的53 Ah大型袋式电池的行为，包括：连续充电（0.5C -2C），连续放电（0.5C-5C）以及电动汽车（EV）中的电池在城市驾驶周期（WLTP 3类）上的运行，以及用于高性能EV的赛车。一对电极的1D模型与电池的3D热模型结合在一起，以捕获电池规模的温度分布。在环境温度为5的情况下验证了模型的性能$\mathit{摄氏}$–45$\mathit{摄氏}$。结果表明，电池性能高度依赖于环境温度。通过将环境温度从45°C降低到5°C，在0.5C和5C放电下，可用能量分别下降17.1％和7.8％。此外，发现相应的功率损耗为：在竞赛周期下为5.23％，而WLTP驱动周期下为7.57％。全面的实验集支持模型的制定，用于量化关键参数和模型验证。提供了模型的完整参数集，以确保模型是支持进一步研究的宝贵资源。