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江西赣锋锂电科技股份有限公司

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№ CN122926756AInvention
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一种基于材料动力学的锂电池热失控预测方法

本发明提供了一种基于材料动力学的锂电池热失控预测方法，包括以下步骤：S1:建立锂离子电池的电池模型，确定电池的几何尺寸、热物性参数和材料动力学参数；S2:基于锂离子电池的材料动力学参数，构建各材料分解的反应速率常数；S3:基于各材料的反应速率常数，构建电池内部的产气摩尔速率和电芯内部的产热速率；S4:基于电池内部的产气摩尔速率，构建电池的产气累积与泄压流出的动态平衡模型；S5:构建电池的能量守恒方程，实现电芯产气场、压力场与产热场全域耦合的耦合模型；S6：根据耦合模型，预测电池热失控参数。本发明提供的热失控耦合预测方法可以实现从材料分解到PACK级热失控全链路精准预测，支撑预警策略与安全结构设计。

❖江西赣锋锂电科技股份有限公司黄文杰; 王孟科; 周陈全; 陈慧琳; 姚嘉兴; 陆峰Oct 16, 2026§ 1/8 ClaimsG06F 30/20 (2020.01), G06F 30/23 (2020.01), G06F 30/28 (2020.01) +325