PACK-level fire-fighting method and PACK-level fire-fighting structure

The invention discloses a PACK level fire fighting method and structure in the technical field of batteries, the PACK level fire fighting structure comprises a mounting shell, a plurality of battery packs and a packaging plate arranged at the tops of the battery packs, each battery pack comprises a packaging shell, a packaging inner cavity is formed in each packaging shell, a plurality of batteries are uniformly packaged in the packaging inner cavities, and the packaging plates are arranged at the tops of the battery packs. A gas storage tank is further packaged in the ends, close to the battery, of the multiple packaging inner cavities, the inner walls of the multiple gas storage tanks are filled with compressed fire fighting gas, exhaust pipes are fixed to the outer walls of the bottom ends of the multiple gas storage tanks in a penetrating mode, and electric control airtight valves are arranged in the ends, away from the gas storage tanks, of the multiple exhaust pipes; a plurality of BMUs are uniformly ar