NOVELTY - The apparatus (10) has a destructive valve i.e. safety valve (21), arranged in a destructive valve positioning surface (22) and provided with a battery. A destructive valve reverse surface (24) is formed on an opposite side to the destructive valve positioning surface. A coil spring (54) urges the battery in a direction of pressing the destructive valve reverse surface on a reverse surface opposing surface (53) to a space (S1) that is formed between the destructive valve positioning surface and a positioning surface opposing surface (51).    USE - Apparatus for molding a resin part of a battery such as square-shaped battery, lithium ion battery and nickel-hydrogen battery, that is utilized in a motor vehicle.    ADVANTAGE - The coil spring urges the battery in the direction of pressing the destructive valve reverse surface on the reverse surface opposing surface to the space that is formed between the destructive valve positioning surface and the positioning surface opposing surface so as to mold the resin part in a clearance gap between the battery and a holder, so that dimension error of the battery can be reduced by expansion/contraction of the spring part. The apparatus is provided with a molding die arranged in the space with a movable nest so as to suppress molten resin in a cavity flowing into the space. The molding die is provided with a through-hole that is extended from a reverse surface opposing surface to an outer surface of the molding die, so that a battery can be easily set and removed from the molding die.    DESCRIPTION OF DRAWING(S) - The drawing shows a fragmentary sectional view of a resin part molding apparatus.'(Drawing includes non-English language text)'    Space between a destructive valve positioning surface and a positioning surface opposing surface (S1)    Resin member molding apparatus (10)    Destructive valve (21)    Destructive valve positioning surface (22)    Destructive valve reverse surface (24)    Positioning surface opposing surface (51)    Reverse surface opposing surface (53)    Coil spring (54)