晶体硅太阳电池背面套印图形设计对电池性能和组件性能的影响

DESIGN OF BACK OVERPRINTING PATTERN OF CRYSTALLINE SILICON SOLAR CELL INFLUENCING PERFORMANCE OF SOLAR CELL AND CELL MODULE

以晶体硅太阳电池背面套印图形为研究对象,通过设计背电场和背电极套印方式以及背电极图形,对背面不同套印图形的接触电阻、电池的电性能和组件性能进行研究。研究结果表明:背面铝背场和银电极在重叠面积为4.35%,且背电极蜈蚣脚间距为1 mm时的接触电阻最小,电池效率提升最大,同时组件输出功率增益最多。该研究为晶体硅太阳电池背面套印图形设计和背电极图形的优化提供指导。

To study the contact resistance and the performance of the solar cell and cell module using the back overprinting pattern as the research object,through designing the back field and back electrode overprinting method as well as back electrode pattern.The results show that when the overlapping square of the aluminum back-surface-field and back electrode is 4.35 percent and the spacing of the back electrode additional is one millimeter,the contact resistance is the smallest,and the improvement of the cell’s efficiency and the output power of the module is the largest.The research provide the guidance for the design of the back field and back electrode overprinting and optimization of the back-electrode pattern.