A method of forming battery grids or plates that includes the step of mechanically reshaping or refinishing battery grid wires to improve adhesion between the battery paste and the grid wires. The method is particularly useful in improving the past adhesion to battery grids formed by a continuous ba
A method of forming battery grids or plates that includes the step of mechanically reshaping or refinishing battery grid wires to improve adhesion between the battery paste and the grid wires. The method is particularly useful in improving the past adhesion to battery grids formed by a continuous batter grid making process (such as strip expansion, strip stamping, continuous casting) that produces grid wires and nodes with smooth surfaces and rectangular cross-section. In a preferred version of the method, the grid wires of battery grids produced by a stamping process are deformed such that the grid wires have a cross-section other than the rectangular cross-section produced by the stamping process. The method increases the cycle life of a battery.
대표청구항▼
1. A method of producing battery grids comprising: providing a strip of material comprising lead;removing material from the strip to form a plurality of interconnected grids, each interconnected grid comprising a plurality of wires having opposed ends and joined to at least one of a plurality of nod
1. A method of producing battery grids comprising: providing a strip of material comprising lead;removing material from the strip to form a plurality of interconnected grids, each interconnected grid comprising a plurality of wires having opposed ends and joined to at least one of a plurality of nodes, wherein each of the plurality of interconnected grids includes a plurality of vertical grid wires and a plurality of horizontal wires;deforming at least one of the plurality of wires such that the at least a portion of the deformed wire has a non-rectangular cross-sectional shape;deforming at least one of the plurality of nodes; andwherein the step of deforming at least one of the plurality of wires comprises deforming a plurality of vertical wires. 2. The method of claim 1, wherein the step of deforming at least one of the plurality of wires comprises deforming a plurality of horizontal wires. 3. The method of claim 1, wherein the plurality of wires having opposed ends and joined to at least one of a plurality of nodes formed during the removing step are formed having a rectangular cross-section, and deforming at least one of the plurality of wires comprises deforming at least one of the rectangular cross-section wires. 4. The method of claim 1, wherein the wires are deformed to have an octagonal cross-sectional shape. 5. The method of claim 1, wherein the removing step comprises a progressive punching operation. 6. The method of claim 1, wherein the removing step is performed in a stamping station. 7. The method of claim 1, wherein the steps of deforming at least one of the plurality of wires and deforming at least one of the plurality of nodes comprise coining at least one of the plurality of wires and at least one of the plurality of nodes. 8. The method of claim 1, wherein the step of deforming at least one of the plurality of wires comprises deforming the wire along ninety percent of a length of the wire. 9. A method of forming a battery grid comprising: stamping a grid material to form a stamped battery grid with a thickness defined by opposed planar surfaces, said stamped battery grid having a frame surrounding a grid network; said grid network comprising a plurality of grid wire elements and nodes interconnecting the grid wire elements to define a plurality of open spaces in the grid network, said grid wire elements and nodes having a substantially rectangular transverse cross section;deforming at least a portion of the grid network of the stamped battery grid to form a plurality of grid wires having a transverse cross-section with a reshaped outer surface and a plurality of nodes having a transverse cross section with a reshaped outer surface without altering the thickness of the grid wires. 10. The method of claim 9, wherein the stamping step forms a grid having a plurality of grid wires including vertical grid wires and horizontal grid wires. 11. The method of claim 9, wherein the stamping step forms a grid network having a vertical grid wire element extending from the top frame element and parallel to the side frame element forming a radius line running through the vertical grid wire element, and an additional grid wire element extending radially from the top frame element such that it intersects the radius line. 12. The method of claim 9, wherein deforming step comprises modifying the grid wire cross-sectional shape from rectangular to non-rectangular. 13. The method of claim 9, wherein the deforming step comprises coining at least a portion of the grid network. 14. The method of claim 9, wherein the grid wire elements are deformed to include a recessed portion on a side surface. 15. The method of claim 9, wherein deforming at least a portion of the grid network of the stamped battery grid forms a plurality of grid wires having an octagonal cross-sectional shape. 16. The method of claim 9, wherein deforming at least a portion of the grid network of the stamped battery grid to forms a plurality of grid wires having a transverse cross-section with a reshaped outer surface extending along ninety percent of a length of the grid wire. 17. A method of making battery grids comprising: providing a strip of material comprising lead;stamping material out of the strip to form a plurality of interconnected grids having opposed substantially planar surfaces, each interconnected grid comprising a plurality of wires having opposed ends and joined to at least one of a plurality of nodes; anddeforming at least one of the plurality of wires between its opposed ends such that the deformed wire has a non-rectangular transverse cross-sectional shape and deforming at least one of the plurality of nodes such that the deformed node has a non-rectangular transverse cross-sectional shape taken across adjacent open spaces diagonally opposite one of said plurality of nodes, wherein during the deformation step the at least one of the plurality of wires and the at least one of the plurality of nodes are reshaped to modify transverse cross-section corners on at least one of the opposed substantially planar surfaces. 18. The method of claim 17, wherein stamping material out of the strip forms a plurality of interconnected grids having a plurality of wires including vertical grid wires and horizontal grid wires. 19. The method of claim 17, wherein stamping step includes forming a grid having a vertical wire element extending from a top frame element and parallel to a side frame element forming a radius line running through the vertical grid wire element, and an additional grid wire element extending radially from the top frame element such that it intersects the radius line. 20. The method of claim 17, wherein the deforming step comprises modifying the grid wire cross-sectional shape from rectangular to non-rectangular. 21. The method of claim 17, wherein the wires are deformed to have an octagonal cross-sectional shape. 22. The method of claim 17, wherein the deforming step comprises coining the at least one of the plurality of wires. 23. The method of claim 17, wherein the deforming step includes deforming at least one of the plurality of wires between its opposed ends such that the deformed wire has a non-rectangular transverse cross-sectional shape extending along a length of the wire. 24. The method of claim 17, wherein the wires are deformed to have a recessed portion on a side surface.
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