Flame-retardant heat-dissipation lithium battery shell and preparation method thereof

The invention discloses a flame-retardant heat dissipation lithium battery shell which comprises an upper shell, a plurality of strip-shaped heat dissipation holes are formed in the upper shell, a heat dissipation groove is formed in the upper shell, the bottom wall of an inner cavity of the heat dissipation groove located below a partition plate is sunken downwards to form an air outlet groove, and sodium azide is arranged in the air outlet groove. A glass cover is arranged at the top of a jet groove; a plurality of mounting holes are formed in the partition plate, air holes are formed in theouter sides of the mounting holes, telescopic air bags made of flame-retardant materials are arranged above the air holes, and reaction assemblies are arranged in the mounting holes; the reaction assemblies comprise liquid storage bags made of fragile glass materials, piercing parts which are positioned at the bottom of the liquid storage bags and are made of ceramic materials, and counterweightparts positioned at the to