Patent ID: 6979517
Filing Date: 2005-12-27
Classification: B21D,H01M,Y02E,Y02P,Y10T

Abstract:
1. A battery electrode plate comprising: a core member that is densely coated with a mixture paste chiefly including an active material, wherein: the core member is made of a metal sheet, the metal sheet being made of any one selected from the group consisting of nickel, copper, aluminum, iron, and an alloy chiefly comprising any of these metals; the metal sheet being formed with a plurality of strips; said strips comprising first and second bowed portions alternately protruding on the front and back sides of the metal sheet along one direction (X) of the metal sheet, each bowed portion in said one direction directly contacting each adjacent bowed portion in said one direction; said strips forming a plurality of protruding rows, the protruding rows being arranged along a direction (Y) orthogonal to the direction (X) with flat parts of a predetermined width interposed between each two protruding rows; said (Y) direction defining a length of said electrode plate, said electrode plate having first and second opposing lengthwise edges, each of said edges comprising a plain part, said plain part extending along the entire length of said electrode plate; and wherein a plain part in the core member is corrugated by forming grooves or ridges therein.