摘要
空间太阳电池在低地球轨道工作时受到原子氧等的腐蚀,其互连材料的寿命决定了电池的寿命。为此,设计了一种Ag/Mo/Ag三层夹心结构的复合互连材料取代目前使用的纯Ag互连材料,选择耐原子氧腐蚀的Mo作为衬底材料,涂覆Ag薄膜以利于电阻焊接。采用线性规划思路优化求解复合材料各层厚度范围。通过有限元分析模拟了互连片与电池焊接后的应力和形变分布,验证了上述设计结果。根据设计结果实际制备出复合互连材料,经焊接验证其是可行的。
Solar cell often interact with atomic oxygen in low Earth orbit,thus its lifetime is determined by interconnect material.A Ag/Mo/Ag composite sandwich structured interconnect material was designed to replace the current used pure Ag foils interconnect material,using Mo as substrate for its atomic oxygen corrosion resistant ability,and Ag film as coating for resistance welding.The ideas of linear programming were used to optimize the thickness range of composite material.Finite element analysis were used to simulate the stress and deformation distribution of welding spots,and the simulation proved the design above.Composite interconnect material was prepared according to the design,and its welding performance was tested which verified its feasibility.
出处
《材料导报》
EI
CAS
CSCD
北大核心
2015年第2期143-149,共7页
Materials Reports
基金
国家自然科学基金(51401080)
关键词
互连材料
Ag薄膜
太阳电池
空间
Mo箔
interconnect material
silver film
solar cell
aero space
molybdenum foils
