Curved-surface battery and preparation method thereof

The invention relates to the technical field of photovoltaic cells, and provides a curved-surface cell and a preparation method thereof. The preparation method of the curved-surface battery comprises the following steps: forming an initial plane structure which comprises a transparent substrate layer; the initial functional film layer is positioned on the transparent substrate layer and at least comprises a transparent conductive layer and a battery layer; carrying out hot bending treatment on the initial plane structure, so that the initial plane structure is deformed into the curved-surface battery intermediate of which the whole is of a curved-surface structure; forming a curved-surface battery, and forming a back contact layer on the intermediate of the curved-surface battery; and forming a back electrode layer on the surface of one side, deviating from the curved-surface battery intermediate, of the back contact layer. By adopting the preparation method of the curved-surface battery provided by the inven