Novel BIPV photovoltaic roof composition board and construction method thereof

The invention provides a novel BIPV photovoltaic roof composition board and a construction method thereof, and relates to the field of photovoltaic roofs. The novel BIPV photovoltaic roof composition board comprises purlines, a plurality of purlines are arranged in parallel, a plurality of heat insulation plates are detachably connected to the upper side walls of the purlines, a plurality of supporting protrusions are fixedly connected to the upper side walls of the heat insulation plates, and a roof board is fixedly arranged on the upper side walls of the heat insulation plates. The upper side wall of the roof panel is fixedly and movably connected with photovoltaic cell pieces, the adjacent photovoltaic cell pieces are fixed through a wind-resistant treading clamp, a side protrusion is arranged on the left side wall of the heat insulation plate, and a side groove is formed in the right side wall of the heat insulation plate. The photovoltaic cells are doubly fixed through the two structural adhesives and th