Fireproof distributed photovoltaic grid-connected cabinet

The invention discloses a fireproof distributed photovoltaic grid-connected cabinet, and relates to the technical field of grid-connected cabinets. The fireproof distributed photovoltaic grid-connected cabinet comprises a grid-connected cabinet body, and at least one fire extinguishing box body is arranged at the top end of the grid-connected cabinet body. When the number of the fire extinguishing box bodies is two or more, the fire extinguishing box bodies are located on the same plane. Partition plates are symmetrically hinged in the fire extinguishing box bodies, a thermal expansion type fire extinguishing medium fills the gaps between the fire extinguishing box bodies and partition plates, and elastic material spraying assemblies for sensing air pressure movement are arranged in the fire extinguishing box bodies. The thermal expansion type fire extinguishing medium is arranged and is decomposed into carbon dioxide, and under the action of the carbon dioxide, the space air pressure in the upper cavity is gradually increased until the elastic force of the springs is overcome to drive the partition plates on the two sides to move downwards and be separated. In the separation process, the carbon dioxide gas and sodium bicarbonate particles in the upper cavity can penetrate through the channel to descend and enter the grid-connected cabinet body, and the carbon dioxide gas covers the surface of a comburent to play a role in flame retardance.