Pressure-Dependent Thermal Network Model for Press-Pack Power Modules with Prognostics of Mechanical Status  

作　　者：Yao Chang Yu Zhou Ankang Zhu Haoze Luo Wuhua Li Chushan Li Francesco Iannuzzo Xiangning He 

机构地区：[1]College of Electrical Engineering,Zhejiang University,Hangzhou,310027,China [2]Zhejiang University–University of Illinois at Urbana-Champaign Institute,Zhejiang University,Haining,314400,China [3]Department of Energy Technology,Aalborg University,Aalborg 9220,Denmark

出　　处：《CSEE Journal of Power and Energy Systems》2025年第1期424-439,共16页中国电机工程学会电力与能源系统学报(英文)

基　　金：supported by the National Natural Science Foundation of China(51877192;52107211);the Zhejiang Provincial Natural Science Foundation of China(LQ21E070006).

摘　　要：The press-pack power module with multi-chip layout has drawn increasing attention from industry and academia with its thermal analysis becoming an essential issue.However,the pressure-dependent thermal variables,such as thermal contact resistance and thermal coupling resistance,are often neglected.In this paper,a pressure-dependent thermal network model is developed to characterize the thermal performance and mechanical status of press-pack power modules.By including the thermal contact resistance and thermal coupling resistance as the function of pressure,the proposed model ensures a more precise thermo-mechanical evaluation inside the press-pack power module.The influence of pressure on self-heating effects and thermal coupling effects of power modules is studied using the knowledge of elastic mechanics.A press-pack prototype with variable pressure loads is assembled.Then,thermal experiments under different pressures on chips are conducted and the pressure-variable temperature responses of the thermal network are measured.Consequently,the feasibility of the proposed thermal network model is validated.A cost-effective prognostic method on the mechanical status of press-pack power module is also achieved.

关 键 词：Mechanical status press-pack power module pressure-dependent model thermal network. 

分 类 号：G63[文化科学—教育学]