手机传热特性分析与研究  

Analysis and Research on Heat Transfer Characteristics of Mobile Phone

作　　者：邓志勇[1,2] 晋芳伟[1,2] 熊昌炯[1,2] 吴龙[1,2,3] 

机构地区：[1]三明学院机电工程学院,福建三明365004 [2]机械现代设计制造技术福建省高校工程研究中心,福建三明365004 [3]福建三明高新技术产业开发区博士后工作站,福建三明365500

出　　处：《三明学院学报》2015年第4期30-37,共8页Journal of Sanming University

基　　金：三明学院科研基金项目(CB201003/Q);中国博士后基金(2013M541851);福建省科技厅高校产学合作重大项目(2012H6018)

摘　　要：基于传热学的基本理论,建立了手机有限元模型,构建了由外壳、电池、电路板、芯片和外界环境组成的传热系统。从4种常温工况、错误使用手机和3种环境温度等方面对比分析了在多工况、多环境下手机的瞬态最高平均温度和温度分布云图,研究了采用石墨片导热来降低电池和芯片温度的方法,仿真结果表明电池温降达5.4℃,满足了GB/T 18287-2000规范对电池使用温度的要求,且整体温度分布更加均匀。瞬态温度分析和石墨片导热性研究为手机热可靠性和安全性设计研究提供一些有益的参考。Based on the basic theory of heat transfer, a finite element model of mobile phone has been established and the heat transfer system which is composed of the outer shell, the battery, the circuit board, chips and the external environment is constructed. From aspects of four normal temperature conditions, incorrect method of using mobile phone and three kinds of ambient temperature, the transient maximum average temperature and the temperature contours of mobile phone under multiple loading conditions and multi-environment are analyzed. Moreover, the method on application of graphite sheets with good thermal conductivity to reduce temperature of the battery and chip is studied. The simulation results show that the battery temperature is reduced by up to 5.4 degrees which meet the battery temperature requirements on the specification of GB / T 18287-2000, and the temperature distribution on the whole battery is more uniform. The analysis on transient thermal and the study on thermal conductivity of the graphite sheet provide some useful reference for mobile design and research on thermal reliability and security.

关 键 词：传热 热可靠性 有限元 瞬态分析 

分 类 号：TN406[电子电信—微电子学与固体电子学]