Self-forming packaging material, preparation method and application thereof, and method for encapsulating battery

The invention belongs to the technical field of packaged batteries, and particularly relates to a self-forming packaging material, a preparation method and application thereof, and a method for encapsulating a battery. The self-forming packaging material provided by the invention is prepared from the following raw materials in percentage by mass: 60 to 80 percent of inorganic hydrated salt, 5 to 15 percent of deionized water, 5 to 10 percent of acrylic monomer, 0.3 to 5 percent of cross-linking agent, 0.7 to 5 percent of polysaccharide monomer, 2 to 10 percent of moisturizing material and 1 to 5 percent of initiating material. In the invention, the self-forming packaging material has the heat absorption capability of melting and decomposing two stages, the melting temperature is 20-60 DEG C, the melting heat absorption is greater than 140J/g, the thermal decomposition stage is subjected to chemical reaction at 100-200 DEG C and actively absorbs heat, the decomposition heat absorption is greater than 980J/g, t