集成技术2025，Vol.14Issue(6)：67-76,10.DOI:10.12146/j.issn.2095-3135.20250726001
基于柔性接触界面和弹性连接的压紧式热电器件设计
Design of Compression-Type Thermoelectric Device Based on Flexible Contact Interface and Elastic Connection
摘要
Abstract
The long-term operational stability of thermoelectric devices in extreme environments places stringent demands on their interconnection structures.In this work,a clamped thermoelectric device based on a segmented Bi2Te3-PbTe architecture is developed.A flexible electrode composed of graphite and copper foil is introduced at the hot side to form an elastic,self-adaptive contact interface,effectively relieving interfacial thermal stress and reducing contact resistance.At the cold side,a corrugated ohmic ring and spring-loaded insulating sleeve are employed to decouple the motion of P-type and N-type thermoelectric legs,thereby enhancing the device's thermomechanical stability.The fabricated device delivers an output power of 14 W,a conversion efficiency of 10%,and a power-to-mass ratio of 9.33 W/kg under a temperature difference of 450 K,significantly outperforming conventional clamped designs.Moreover,after 250 thermal cycles between 300 K and 723 K,the device exhibits no noticeable degradation,demonstrating excellent operational reliability.关键词
压紧式热电器件/接触式连接/弹性结构/热应力Key words
compression-type thermoelectric device/contact-based connection/elastic structure/thermal stress分类
能源科技引用本文复制引用
张宗委,蔡剑锋,陈志禹,王雨,刘国强,吴洁华,孙鹏,李满仓,蒋俊..基于柔性接触界面和弹性连接的压紧式热电器件设计[J].集成技术,2025,14(6):67-76,10.基金项目
国家自然科学基金项目(U21A2079,12504041) （U21A2079,12504041）
宁波市国际合作项目(2023H002) （2023H002）
浙江省自然科学基金项目(Q24E020021) This work is supported by National Natural Science Foundation of China(U21A2079,12504041),Ningbo International Cooperation Project(2023H002),Zhejiang Provincial Natural Science Foundation of China(Q24E020021) （Q24E020021）
