Electrode assembly for sealed rechargeable alkaline battery cells

• US 3,081,367 A
• Filed: 05/10/1961
• Issued: 03/12/1963
• Est. Priority Date: 05/10/1961
• Status: Expired due to Term

• Current Assignee: Harold Field, Mary Daria
• Original Assignee: Harold Field, Mary Daria
• Inventors: Field, Harold, MARY DARIA
• Application Number:
  US04/120,458
• Time in Patent Office: 671 Days
• US Class Current: 429/94
• CPC Class Codes: H01M 10/286 Cells or batteries with wound or folded electrodes
• CPC Class Codes: H01M 10/34 Gastight accumulators
• CPC Class Codes: H01M 50/3425 in the form of rupturable membranes or weakened parts, e.g. pierced with the aid of a sharp member
• CPC Class Codes: H01M 50/536 characterised by the method of fixing the leads to the electrodes, e.g. by welding
• CPC Class Codes: H01M 50/538 Connection of several leads or tabs of wound or folded electrode stacks
• CPC Class Codes: H01M 50/56 Cup shaped terminals
• CPC Class Codes: Y02E 60/10 Energy storage using batteries
• CPC Class Codes: Y02P 70/50 Manufacturing or production processes characterised by the final manufactured product

Claims

1. IN A RECHARGEABLE ALKALINE STORAGE BATTERY CELL, A METALLIC CASING COMPRISING A TUBULAR CASING WALL HAVING A BOTTOM WALL ENCLOSING ONE TUBULAR WALL END AND A CASING OPENING AT THE OPPOSITE END, A METALLIC TOP WALL INCLUDING A TERMINAL ELEMENT AND HAVING A PERIPHERY INSULATINGLY JOINED TO THE OPEN END OF SAID TUBULAR WALL, A SPIRALLY COILED ELECTRODE ASSEMBLY ENCLOSED IN SAID CASING ENCLOSURE COMPRISING AT LEAST TWO SUPERPOSED ELECTRODE PLATES AND AN INTERPOSED ELECTROLYTE-HOLDING POROUS, LAYERLIKE SEPARATOR AND EXTENDING GENERALLY COAXIALLY WITH SAID TUBULAR CASING WALL, THE BOTTOM EDGE REGION OF ONE OF SAID ELECTRODE PLATES FACING TOWARD SAID BOTTOM WALL AND THE OPPOSITE TOP EDGE REGION OF THE OPPOSITE-POLARITY OTHER ELECTRODE PLATE HAVING EACH METALLICALLY AFFIXED THERETO AN OUTWARDLY-EXTENDING METALLIC TERMINAL TAB, THE TERMINAL TAB FROM SAID TOP EDGE REGION EING METALLICALLY CONNECTED TO SAID TOP-WALL TERMINAL ELEMENT, THE OPPOSITE BOTTOM TERMINAL TAB EXTENDING OVER THE BOTTOM AND OVER AN EXTERIOR SIDE OF THE ELECTRODE ASSEMBLY AND BEING MATALLICALLY CONNECTED TO AN INTERIOR PORTION OF SAID TUBULAR CASING WALL NEARER TO THE CASING OPENING THAN TO SAID BOTTOM WALL.