Battery packaging film and manufacturing method thereof

The invention discloses a battery packaging film and a manufacturing method thereof, the battery packaging film comprises an outer protection layer, a metal foil layer and a heat sealing layer, and also comprises a composite adhesive layer and an insulation bonding layer, the outer protection layer, the composite adhesive layer, the metal foil layer, the insulation bonding layer and the heat sealing layer are connected in sequence, and the insulation bonding layer is a polyolefin composition with an insulation inorganic filler. The battery packaging film formed by the combination has excellent barrier property, packaging strength and punch forming property, the electrolyte corrosion resistance and the water vapor barrier property are improved, and meanwhile, the insulating bonding layer contains the insulating inorganic filler, so that the battery short circuit caused by over-melting and foreign matter puncture can be prevented. 本发明公开了一种电池封装膜及其制造方法，包括外保护层、金属箔层、热封层，还包括复合胶层、绝缘粘结层，外保护层、复合胶层、金属箔层、绝缘粘结层、热封层依次连接，绝缘