Preparation method of car storage battery box body and box body prepared by using same

The invention provides a preparation method of a car storage battery box body and a box body prepared by using the same. The method comprises the following steps of: (a) preparing a metal shell; and (b) injecting PP (Polypropylene) plastics on the metal shell to ensure that the inner surface and the outer surface of the metal shell are adhered with the PP plastics, and the PP plastics on the inner surface of the metal shell and the PP plastics on the outer surface of the metal shell are fused together. In the invention, the PP plastic layers formed on the inner surface and the outer surface of the metal shell through an injection molding process are not easy to fall off, thus even if a car runs in a place with a poorer road condition and a wiring harness falls off or electrolyte overflowsbecause of bumping, wiring harness bonding or box body corrosion cannot be caused, thereby potential safety hazards are eliminated. In addition, because the outer surface of the metal shell is also adhered with the PP plastic