Battery module capable of automatically extinguishing fire

The invention discloses a battery module capable of automatically extinguishing fire, which comprises a frame body and a battery cell, wherein the battery cell is arranged in the frame body; a storagechamber with an opening in the top is arranged outside the frame body; the bottom of the storage chamber is connected with the frame body; a release hole is formed in the bottom of the storage chamber; the storage chamber is communicated with the interior of the frame body through the release hole; a hot melt film for sealing the release hole is also attached to the bottom of the storage chamber;the hot melt film and the storage chamber are sealed through hot melting; a sealing cover is arranged at the top end of the storage chamber; a liquid injection hole is formed in the sealing cover; awater-based fire extinguishing agent capable of reacting with electrolyte and positive electrode slurry is injected into the storage chamber through the liquid injection hole; and the liquid injectionhole is sealed after the wa