期刊名称：International Journal of Energy and Environment
印刷版ISSN：2076-2895
电子版ISSN：2076-2909
出版年度：2017
卷号：8
期号：1
页码：43-50
出版社：International Energy and Environment Foundation (IEEF)
摘要：As the main power source of electric vehicles and electronic devices, lithium-ion batteries have large capacity and high power density. However, the excessive heat generation often leads to high temperature of the battery, which challenges the safety of the battery. The heat generation and heat dissipation characteristics of an 18650 type lithium-ion batteries in charging process with natural cooling conditions are simulated by using finite element analysis software in this paper. The effects of charging rate and placement direction are analyzed. The results show that the maximum temperatures are 42.33 ºC, 58.84 ºC and 35.62 ºC, i.e. increased by 7.33 ºC, 23.84 ºC and 1.62 ºC after 1C-rate, 2C-rate and 0.5C-rate chargings, respectively. It is unable to cool the battery by natural convection cooling in 2C-rate charging. Forced cooling should be used to ensure the safety of the battery
