Fuel cell using nitrogen purging, purging method and vehicle

The invention relates to the technical field of fuel cells, in particular to a fuel cell purged by nitrogen, a purging method and a vehicle, the fuel cell purged by nitrogen comprises an air separator and an electric pile, and the electric pile is provided with an air side inlet; the air separator comprises a first valve, a first outlet and a second outlet, an oxygen permeable membrane is arranged on the first outlet, and the second outlet is communicated with the air side inlet through the first valve; when the fuel cell is purged, the first valve is opened to feed gas in the air separator into the electric pile through the air side inlet; through the arrangement of the oxygen permeable membrane on the air separator, oxygen in air entering the air separator can be separated, the main component of remaining gas is nitrogen, and the gas in the air separator is fed into the galvanic pile through the air side inlet by controlling the first valve, so that nitrogen purging is realized; the damage of oxygen in the