Fast internal preheating of 4680 lithium-ion batteries in cold environments

作     者：Chuyue Guan Harrison Szeto Olivia Wander Vijay Kumar Raphaele JClément Yangying Zhu 

作者机构：Department of Mechanical EngineeringUniversity of California Santa BarbaraSanta BarbaraCA 93106USA Department of Chemistry and BiochemistryUniversity of California Santa BarbaraSanta BarbaraCA 93106USA Department of MaterialsUniversity of California Santa BarbaraSanta BarbaraCA 93106USA 

出 版 物：《Nano Research》 (纳米研究（英文版）)

年 卷 期：2024年第17卷第10期

页      面：8794-8802页

核心收录：

学科分类：0808[工学-电气工程] 08[工学] 

基　　金：supported by an Early Career Faculty grant from NASA’s Space Technology Research Grants Program(No.80NSSC23K0072) the National Science Foundation Graduate Research Fellowships Program(No.2139319) 

主　　题：lithium-ion battery 4680 battery thermal management internal battery preheating COMSOL Multiphysics thermal simulation battery temperature heterogeneity 

摘      要：Lithium-ion batteries are expected to operate within a narrow temperature window around room temperature for optimal performance and ***,in cold environments,electric vehicle battery packs must be extensively preheated prior to charge or ***,conventional preheating is accomplished externally,which is slow and thus significantly increases charging ***,internal heating has been demonstrated as a potential solution to quickly and uniformly preheat a lithium-ion pouch ***,internal heating has not been evaluated in other battery formats such as cylindrical *** this work,we present a numerical model of a 4680 battery with internal heaters for fast preheating in cold *** effects that the number of heater layers,heating duration,resting duration,environmental temperature,and boundary heat transfer coefficient have on the temperature heterogeneity of the battery were *** results show that internal heating alone reduces the temperature variation within the battery by a factor of 5 compared to external heating,and by a factor of 20 when combining internal and external *** study further proves that internal preheating of lithium-ion batteries is a promising thermal management strategy,and provides guidance on potential design considerations and heating protocols to implement internal heating.