锂离子电池极片涂布工艺研究进展  

Progress of coating process for lithium-ion battery electrodes

作　　者：曹巍 陈飞[1] 孔祥栋 朱志成 韩雪冰[3] 卢兰光[3] 郑岳久[1] CAO Wei;CHEN Fei;KONG Xiangdong;ZHU Zhicheng;HAN Xuebing;LU Languang;ZHENG Yuejiu(College of Mechanical Engineering,University of Shanghai for Science and Technology,Shanghai 200093,China;Sichuan Cell Technology Co.Ltd,Yibin 644000,Sichuan,China;School of Vehicle and Mobility,State Key Laboratory of Intelligent Green Vehicle and Mobility,Tsinghua University,Beijing 100084,China)

机构地区：[1]上海理工大学机械工程学院,上海200093 [2]四川赛鸥科技有限公司,四川宜宾644000 [3]清华大学车辆与运载学院智能绿色车辆与交通全国重点实验室,北京100084

出　　处：《储能科学与技术》2025年第1期90-103,共14页Energy Storage Science and Technology

基　　金：国家自然科学基金项目(52277222,52177217);上海市自然科学基金项目(22ZR1444500)。

摘　　要：锂离子电池极片涂布工艺在电池制造中占据核心地位,直接决定了电池的能量密度、循环寿命及安全性。目前随着新能源行业对电池需求的激增,如何在确保涂布质量的同时提升生产效率,已成为电池制造厂商关注的焦点。面向电池制造数字化和产业化的发展趋势,本文综合分析了锂离子电池极片涂布工艺的发展,对比分析了常见的涂布方法的特点,基于工艺仿真的手段,从内、外流场两个角度,明确了影响涂层质量和效率的关键因素,系统梳理了狭缝式挤压涂布的优化策略和方法,此外,本文还对比分析了产线中在线检测方法的特点,评估了实用性和局限性,并进一步指出了当前研究的不足和未来的发展趋势,旨在为优化锂离子电池涂布工艺提供理论支持和实践指导。Lithium-ion battery electrode coating process is a crucial component in battery manufacturing,significantly affecting energy density,cycle life,and safety of the batteries.As the demand for batteries in the new energy sector increases,ensuring high-quality coatings while enhancing production efficiency has become a key priority for battery manufacturers.In the context of the ongoing trends of digitalization and industrialization in battery manufacturing,this study provides an in-depth analysis of advancements in lithium-ion battery wafer coating techniques;it comparatively examines the characteristics of common coating techniques and identifies critical factors influencing coating quality and efficiency from the perspectives of internal and external flow fields.In addition,this study systematically investigates the optimization strategies for slit extrusion coating using process simulation.Furthermore,it compares and examines the characteristics of various online inspection approaches used in production lines,assessing their impacts on production efficiency and energy density.This study also discusses the practicality and limitations of these inspection approaches,identifies existing research gaps,and outlines future development trends.The aim is to provide theoretical support and practical guidance for optimizing the lithium-ion battery coating process.

关 键 词：锂离子电池 涂布工艺 工艺仿真 狭缝式挤压涂布 在线检测 

分 类 号：TK912[动力工程及工程热物理]