Polyolefin hot melt adhesive for adhesion of new energy battery and preparation method of polyolefin hot melt adhesive

The invention discloses a polyolefin hot melt adhesive for bonding a new energy battery, which comprises the following components in parts by weight: 20-50 parts of modified polyolefin resin, 20-50 parts of tackifying resin, 1-10 parts of a temperature-resistant modifier, 2-10 parts of an impact-resistant modifier, 2-10 parts of a medium-resistant modifier and 0.1-5 parts of an antioxidant, wherein the modified polyolefin resin is polyolefin resin into which an epoxy group, a carboxylic acid group and a phosphate group are introduced; the temperature-resistant modifier is silicon dioxide microspheres which are modified by a silane coupling agent and have a hollow structure, the impact-resistant modifier is resin with a core-shell structure, and the medium-resistant modifier is glass flakes and graphene oxide which are respectively modified by the silane coupling agent. According to the polyolefin hot melt adhesive prepared by the invention, the temperature resistance, medium resistance and impact resistance o