Topology optimization of the front electrode patterns of solar cells based on moving wide Bezier curves with constrained end

作者：Li, Kai; Wang, Rixin; Zhang, Xianmin; Zhu, Benliang^*; Liang, Junwen; Yang, Zhuobo

来源：STRUCTURAL AND MULTIDISCIPLINARY OPTIMIZATION, 2022, 65(2): 57.

DOI：10.1007/s00158-021-03162-0

• Solar cells
• Front electrode patterns
• Topology optimization
• Moving morphable components
• Explicit boundary

The front electrode pattern of the solar cell has an important influence on the performance of the solar cell. This paper proposed an explicit topology optimization method for the design of the front electrode patterns of solar cells. The explicit topology optimization method is based on moving wide Bezier curves with a constrained end. The front electrode pattern is composed of a set of wide Bezier curves. The control points and width of the wide Bezier curve are regarded as design variables. The validity of the proposed method is tested on side-contact and pin-up module solar cells. Compared with traditional shape and size optimization, the proposed topology optimization method has greater design freedom, which makes it possible to generate novel and potentially superior front electrode patterns. Compared with the topology optimization method based on the solid isotropic material with penalization (SIMP) method, the proposed topology optimization method can obtain a clear and smooth boundary and easily achieve the minimum width scale control. In addition, the effects of the initial topology, number of control points, number of the components, mesh resolution, and solar cell size on the optimization results are studied. The results suggest that using the proposed method to optimize the front electrode pattern can probably improve the performance of solar cells.