Hydrogel phase change aerogel heat insulation pad for battery

The utility model discloses a hydrogel phase change aerogel heat insulation pad for a battery, which comprises an aerogel fiber felt layer, a packaging hydrogel layer and an outer packaging layer, the packaging hydrogel layer is arranged on at least one working end face of the aerogel fiber felt layer, and the aerogel fiber felt layer and the packaging hydrogel layer are packaged by the outer packaging layer. The packaging hydrogel layer is directly overlaid on the aerogel fiber felt layer to play a role of a phase change material, so that the effects of fragmentation and combustion promotion are avoided, and the problem of leakage is also avoided. According to the utility model, the hydrogel packaging structure impregnated with the inorganic salt is used for replacing an externally-coated or internally-impregnated phase-change material which is used in the prior art, so that the defects in the prior art are overcome, the use performance of the battery heat insulation pad is improved, and the service life of