The utility model discloses a battery component, a curved photovoltaic component and a photovoltaic building surface. The battery
assembly comprises a plurality of battery pieces and a
bus bar. The battery pieces are used for converting
light energy into
electric energy, and the plurality of battery pieces are electrically and physically connected through the
interconnection strips to form a battery layer with a curved section. And the
bus bars are electrically connected with the
interconnection strips at the end parts of the battery
layers and are used for leading out electric signals of the battery
layers. The battery
assembly comprises a covering area and a non-covering area, the covering area corresponds to at least part of the surface of at least one of the
interconnection strip and the
bus bar, and the color presented by the covering area is consistent with that presented by the non-covering area. In the battery
assembly, the covering area corresponds to at least part of the surface of at least one of the interconnection strip and the bus bar, and the color presented by the covering area is consistent with the color presented by the non-covering area, so that the color presented by the whole battery assembly is consistent. According to the battery assembly, the overall consistency is good, and the attractiveness of the battery assembly is good.