▎ 摘　　要

NOVELTY - The utility model claims a battery for modified composite membrane, comprising a porous polymer film, transition film and gelatinized microporous polymer membrane, the gelatinized microporous polymer film outer surface layer is provided with a stain-resistant layer. the gelatinized microporous polymer film surface layer is provided with the anti-freezing layer; and said transitional film and the anti-freezing layer is provided with flame-retardant layer, one end of said porous polymer membrane is provided with a hollow interlayer, the hollow interlayer is provided with graphene heat conducting sheet and graphene heat conducting sheet one end located outside the porous polymer film. the graphene heat conducting sheet is coated with PVC fixing sleeve, the PVC fixing sleeve top and bottom are provided with a reserved hole. The utility model has good anti-freezing effect, good use effect of under the condition of low temperature, good inflaming retarding effect, can effectively prevent the spread of the fire when the accidental fire of the diaphragm, excellent surface antifouling effect, it is not easy to be infected with dust, the heat dissipation effect is excellent, and it is suitable for be widely popularized and used.