Photovoltaic module connecting structure for BIPV photovoltaic system and construction method thereof

The invention provides a photovoltaic module connecting structure for a building integrated photovoltaics (BIPV) photovoltaic system and a construction method thereof, the photovoltaic module connecting structure for the BIPV photovoltaic system comprises a plurality of fixing modules and a photovoltaic module, a ventilation module is installed on a roof module through the fixing modules, the photovoltaic module is laid on the ventilation module, and the photovoltaic module is installed on the roof module through the fixing modules. The fixing assembly comprises supports and a first fixing piece, and the first fixing piece is used for penetrating through the roof assembly so that the supports can be fixedly arranged on the roof assembly. The first fixing piece comprises a limiting rod, a fixed part fixedly arranged at one end of the limiting rod, a movable part capable of moving on the limiting rod, a limiting part rotationally connected to the movable part and a reset part arranged on the limiting rod so tha