电工技术学报  2020, Vol. 35 Issue (14): 3050-3064    DOI: 10.19595/j.cnki.1000-6753.tces.190765
电力电子 |
车用双面散热功率模块的热-力协同设计
曾正1, 欧开鸿1, 吴义伯2, 柯灏韬2, 张欣3
1.输配电装备及系统安全与新技术国家重点实验室(重庆大学) 重庆 400044;
2.新型功率半导体器件国家重点实验室(中车时代半导体有限公司) 株洲 412001;
3.南洋理工大学电气与电子工程学院 新加坡 639798
Thermo-Mechanical Co-Design of Double Sided Cooling Power Module for Electric Vehicle Application
Zeng Zheng1, Ou Kaihong1, Wu Yibo2, Ke Haotao2, Zhang Xin3
1. State Key Laboratory of Power Transmission Equipment & System Security and New Technology Chongqing University Chongqing 400044 China;
2. State Key Laboratory of Advanced Power Semiconductor Devices CRRC Times Semiconductor Co. Ltd Zhuzhou 412001 China;
3. School of Electrical and Electronic Engineering Nanyang Technological University 639798 Singapore
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摘要 双面散热(DSC)功率模块可以降低封装热阻和寄生参数,是车用电机控制器的发展趋势。然而,双面散热功率模块内的热-力交互作用机制尚不明晰,且缺少热-力协同的设计方法。为了克服热阻与应力之间的相互制约,该文提出一种多目标协同的双面散热功率模块设计方法。建立了双面散热功率模块热学和力学性能的数学模型,表征材料属性和封装尺寸对功率模块性能的影响,并利用有限元分析(FEA)方法进行验证。此外,提出双面散热功率模块的多目标优化设计模型,协同提升功率模块的热-力性能,并给出基于非占优遗传算法的求解方法。最后,基于所提出的多目标协同设计方法,对比研究了封装材料属性对优化设计结果的影响。
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曾正
欧开鸿
吴义伯
柯灏韬
张欣
关键词 功率模块双面散热多目标优化热-力协同设计    
Abstract:The double-sided cooling (DSC) packaging remarkably reduces the junction-case thermal resistance and interconnection electrical parasitic of the power module, which is recommended as the foundation of next-generation power control unit of the electric vehicle. However, some technical obstacles should be addressed for the emerging DSC power module. As far as now, the thermo-mechanical interaction mechanism in the DSC power module is not clear. Besides, the multi-physics-oriented co-design methodology of the DSC power module is not available. In this paper, to overcome the tradeoff between thermal resistance and mechanical stress, a multi-objective co-design method is proposed for the DSC power module. The mathematical models are proposed to characterize the thermal and mechanical properties of the DSC power module. In addition, how the material properties and packaging sizes influence the specifications of the DSC power module is insightfully investigated. The finite element analysis (FEA) simulation tool is employed to confirm the proposed models. Besides, a multi-objective optimization model is proposed to coordinately improve the thermo-mechanical performances of the DSC power module, and it is solved by the non-dominated sorting genetic algorithm II (NSGA-II). Finally, based on the proposed multi-objective co-design method, the influence of packaging materials on the optimization results is comparably investigated.
Key wordsPower module    double-sided cooling    multi-objective optimization    thermal- mechanical co-design   
收稿日期: 2019-06-24     
PACS: TM23  
基金资助:国家重点研发计划专项资助项目(2017YFB0102303)
通讯作者: 曾 正 男,1986年生,博士,副教授,研究方向为新型电力电子器件封装集成与应用。E-mail: zengerzheng@126.com   
作者简介: 欧开鸿 男,1994年生,硕士研究生,研究方向为新型电力电子器件封装集成与应用。E-mail: 20143868@cqu.edu.cn
引用本文:   
曾正, 欧开鸿, 吴义伯, 柯灏韬, 张欣. 车用双面散热功率模块的热-力协同设计[J]. 电工技术学报, 2020, 35(14): 3050-3064. Zeng Zheng, Ou Kaihong, Wu Yibo, Ke Haotao, Zhang Xin. Thermo-Mechanical Co-Design of Double Sided Cooling Power Module for Electric Vehicle Application. Transactions of China Electrotechnical Society, 2020, 35(14): 3050-3064.
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