空间太阳电池自动涂胶过程的扩散原理

The Spreading Mechanism in the Coating Process of a Space Solar Cell

空间太阳电池封装操作包括:注射器涂胶过程、盖片胶平面扩散以及玻璃盖片封装操作三个阶段.分析了盖片胶从注射器中流出落在电池片上后,逐渐扩散融合的过程.基于非牛顿流体理论,建立了盖片胶的平面扩散模型,使用有限元软件Adina,基于流体体积法进行运动界面追踪,对模型进行了模拟仿真,并与实验结果进行了对比验证.获得了盖片前胶层的形状,确定了胶层的边缘位置.为封装过程的分析建模提供了胶层厚度和边界等几何参数.对类似的平面扩散问题,也提供了一种新的解决方法.

The bonding operation of a space solar cell consists of three processes: adhesive coating from a syringe,adhesive's planar spreading and bonding of an anti-irradiation cover-glass to a space solar cell.The adhesive's planar spreading on the space solar cell was analyzed.Based on non-Newtonian fluid theory,the adhesive's planar spreading model was founded,the finite element software Adina was employed to trace the moving interface based on the method of Volume of Fluid(VOF),and experiments were performed to validate the simulative results.Thus the area and depth of the adhesive layer before bonding were obtained,and used as initial parameters in next bonding process.Meanwhile,a new solution for planar spreading was presented.