Capacitor structure

A capacitor structure includes a capacitor body integrally rolled by an aluminum foil and a plastic film, two polar plates formed by copper plates and a nonconducting middle layer of resin; wherein, the aluminum foil electrode surface of the capacitor body are integrally welded between the two polar plates and are connected with the polar plates; when the aluminum foil and the plastic film are rolled, a penetrated locating hole is preserved in the center of the capacitor body; the centers of the two polar plates are provided with locating posts; the outsides of the locating posts are coated with insulating sleeves manufactured by nonconducting plastic; the outer diameters of the insulating sleeves manufactured by nonconducting plastic are equal to the inner diameter of the locating hole of the capacitor body, thus being capable of locating precisely when the capacitor body is arranged between the two polar plates.