基于Kuhn屈服准则的锂离子电池极片辊压力建模与分析

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关键词：锂离子电池极片；辊压;Kuhn屈服准则；单位压力分布；单位宽度压力；力矩中图分类号：TG335;TM912DOI：10.3969/j.issn.1004-132X.2026.03.020 开放科学（资源服务）标识码（OSID）：

Abstract： Calendering was a crucial process in the manufacturing of lithium-ion battery electrodes， and the calendering pressure Was an important parameter for electrode calendering.Due to the special structures of battery electrodes，the calendering pressure was dificult to predict.To addressthis issue，a predictive model was established for the unit pressure distribution during the calendering processes of lithium-ion battery electrodes based on Kuhn yield criterion in the field of powder forming. The model was validated through calendering experiments.The results demonstrate good agreement with experimental data，and the prediction errors of the unit width pressure remain within 10% . Further analyses exploring the distribution characteristics of unit pressure and frictional stress within the roll gap were carried out，and the effects of compression rate and rolldiameter on unit width pressure and unit width torque were disussed.The results indicate that both unit width pressure and unit width torque increase with the increasing compression rate and roll diameter.

Key words：lithium-ion battery electrode；calendering；Kuhn yield criterion；unit pressure distribu tion；unit width pressure； torque

0 引言

锂离子电池凭借比能量高、循环寿命长、无记忆效应和环境友好等优势，广泛应用于电动汽车、储能和消费电子等领域[1-3]。（剩余14745字）