Patent ID: 8039153
Filing Date: 2011-10-18
Classification: H01M,Y02E,Y10T

Abstract:
1. A storage battery comprising: a battery plate comprising an expanded grid member having one or more frame portions, a plurality of mesh openings, a plurality of nodes, and a plurality of grid wires extending between nodes; wherein the expanded grid member is formed from a metal sheet having multiple rows of slits extending intermittently at regular intervals along a first direction, the slits from adjacent rows being offset to create a zigzag relation of slits among the multiple rows, the metal sheet being expanded in a direction other than the first direction to form the expanded grid member, each slit of the metal sheet corresponding to a mesh opening among said plurality of mesh openings in the expanded grid member; wherein in the expanded grid member each mesh opening is bordered by a subset of the plurality of nodes and a subset of the plurality of grid wires, each one of said plurality of nodes formed by an uninterrupted portion of the metal sheet that extends between a slit in one row and a correspondingly aligned slit in a row not directly adjacent said one row, each one of said plurality of grid wires formed by a portion of the metal sheet that extends between a slit in one row and a neighboring slit in a row directly adjacent said one row; wherein each one node of said plurality of nodes has a sectional area in a plane of the expanded grid member that is perpendicular to a face of the expanded grid member and extends along a length of said one node, and each one grid wire of said plurality of grid wires has a sectional area in another plane of the expanded grid member that is perpendicular to the face and extends orthogonal to a length of said one grid wire; wherein the sectional area for any given node is at least two times the sectional area of any of the grid wires coupled to said given node, and wherein the sectional area for each one grid wire of said plurality of grid wires is not less than 1.0 mm