Transactions of China Electrotechnical Society  2020, Vol. 35 Issue (14): 3050-3064    DOI: 10.19595/j.cnki.1000-6753.tces.190765
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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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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     
Received: 24 June 2019     
PACS: TM23  
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Zeng Zheng
Ou Kaihong
Wu Yibo
Ke Haotao
Zhang Xin
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Zeng Zheng,Ou Kaihong,Wu Yibo等. Thermo-Mechanical Co-Design of Double Sided Cooling Power Module for Electric Vehicle Application[J]. Transactions of China Electrotechnical Society, 2020, 35(14): 3050-3064.
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https://dgjsxb.ces-transaction.com/EN/10.19595/j.cnki.1000-6753.tces.190765     OR     https://dgjsxb.ces-transaction.com/EN/Y2020/V35/I14/3050
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