• CN：11-2187/TH
  • ISSN：0577-6686
机械工程学报

›› 2012, Vol. 48 ›› Issue (2): 93-101.

• 论文 • 上一篇    下一篇

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固体氧化物燃料电池钎焊自适应密封研究进展

蒋文春;张玉财;巩建鸣;涂善东   

  1. 中国石油大学(华东)化学工程学院;华东理工大学机械与动力工程学院;南京工业大学机械与动力工程学院
  • 发布日期:2012-01-20

Progress in the Bonded Compliant Seal Design of Solid Oxide Fuel Cell

JIANG Wenchun;ZHANG Yucai;GONG Jianming;TU Shandong   

  1. College of Chemical Engineering, China University of Petroleum School of Mechanical and Power Engineering, East China University of Science and Technology School of Mechanical and Power Engineering, Nanjing University of Technology
  • Published:2012-01-20

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摘要： 平板式固体氧化物燃料电池(Solid oxide fuel cell，SOFC)是一种直接将储存在燃料和氧化剂中的化学能转化为电能的发电装置，具有能量转化效率高、结构紧凑、对环境污染小等优点，成为替代现有石化燃料的最佳选择。SOFC要通过封接防止泄漏，由于其工作温度高，对封接要求苛刻。在高温下，要求封接材料具有良好的化学稳定性、热稳定性、气密性以及绝缘性等，因此密封技术一直是制约其商业化应用的瓶颈问题。钎焊自适应密封是近几年发展起来的一种平板式SOFC密封技术，利用金属箔片钎焊连接电池和金属框架，具有封接强度高、密封性能好、能吸收热应力等优点，具有较好的应用前景。介绍自适应密封的原理、特点和应用，从结构设计、钎焊技术、残余应力等方面的研究进展进行综述，指出该技术存在的问题，并对其今后的发展方向进行预测和展望。

关键词: 残余应力, 固体氧化物燃料电池, 钎焊工艺, 钎焊自适应密封

Abstract: Planar solid oxide fuel cell (SOFC) is a technology which converts chemical energy into electrical energy directly. Its advantages are high efficiency in energy utilization, compact structure and low pollution to environment, etc, which makes it to be the best replacement of fossil energy. In SOFC stack, sealing technology must be used in order to prevent the leakage. But the high working temperature puts forwards a high requirement for the sealing. It needs good chemical and thermal stabilities, tightness and insulation performance. Therefore, the sealing technology is always the hinder of commercial use for SOFC. Bonded compliant seal (BCS) design is a newly developed sealing method for planar SOFC. It uses a thin foil to connect the cell and window frame, and it has a lot advantages including high strength, good sealing performance and absorbing thermal stresses, etc., which has a broad potential application in the future. This paper introduces its principle, characteristics and application. The research progress is reviewed based on material, brazing technology and residual stress. The problems to be solved are pointed out and the development trend is forecasted.

Key words: Bonded compliant seal, Brazing technology, Residual stress, Solid oxide fuel cell

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