Water-based paint, adhesive film and application of adhesive film in battery assembly

The invention provides a water-based paint, an adhesive film and application of the adhesive film in a battery assembly. The water-based paint comprises the following components in parts by weight: 100 parts of resin emulsion and 5-50 parts of tackifying emulsion. In the actual application process, the water-based paint can be smeared on an existing battery piece packaging adhesive film, and the overall flexibility of the adhesive film can be effectively improved. Meanwhile, the water-based paint has polarity adaptive to the existing battery packaging adhesive film, can be well combined with the existing battery packaging adhesive film, and can be fully spread on the existing battery packaging adhesive film. When the adhesive film is subsequently smeared on the existing EVA/POE base material to be used as a battery component packaging adhesive film, the excellent flexibility of the adhesive film can effectively counteract mechanical stress or thermal stress generated in the processing and using process of a b