电源技术2026，Vol.50Issue(3)：470-478,9.DOI:10.3969/j.issn.1002-087X.2026.03.010
锂离子电池机械滥用复合层模型的构建与验证
Construction and validation of composite layer model for lithium-ion battery under mechanical abuse
摘要
Abstract
During new energy vehicle crashes,lithium-ion traction batteries exhibit mechanical dam-age and thermal runaway risks.However,refined models require excessive computational time,ren-dering them impractical for internal damage analysis under complex crash conditions.Through mate-rial testing and simulation,both homogenization and refined models were established and verified via ball-head extrusion tests,CT scanning,and disassembly.By combining both models,a composite layer model was proposed and constructed,with the proportion of the two models adjusted at 5%in-tervals.Results show that the calculation errors of all proportional composite layer models are within 4%,while the computation time is reduced by approximately 50%,achieving a good balance between high accuracy and high efficiency.Loading tests with 15/30 mm cylinder indenters(X/Y directions)verified the effectiveness of the composite layer model under multiple working conditions.This work introduces a novel modeling approach for battery damage analysis and numerical simulation.关键词
锂离子电池/复合层模型/CT扫描/机械滥用Key words
lithium-ion battery/composite layer model/CT scanning analysis/mechanical abuse分类
信息技术与安全科学引用本文复制引用
应龙,肖商龙,李通,徐建全..锂离子电池机械滥用复合层模型的构建与验证[J].电源技术,2026,50(3):470-478,9.基金项目
福建省自然科学基金项目(2022J01612) （2022J01612）
