Battery sheet and photovoltaic module

Abstract

The application provides a battery piece and a photovoltaic module, and relates to the technical field of photovoltaics.The battery piece comprises a substrate, the substrate comprising a first surface and a second surface arranged oppositely, and a plurality of side surfaces connecting the first surface and the second surface; the plurality of side surfaces comprises a first cutting surface and a first non-cutting surface; the first non-cutting surface is provided with a first texture structure; a first passivation layer is arranged on the first non-cutting surface, and the first passivation layer comprises a silicon-containing compound; a second passivation layer is arranged on the first passivation layer and the first cutting surface, and the second passivation layer comprises an inorganic material.The application reduces the difference between the passivation effect of the cutting surface and the passivation effect of the non-cutting surface by arranging the texture structure on the non-cutting surface and arranging different passivation layers on the non-cutting surface and the cutting surface, avoids the rapid decline of the battery performance caused by the poor passivation effect on one side, and further improves the use durability of the battery piece under the condition of high photoelectric conversion efficiency.

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