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US005525441A
United States Patent [19] [ii] Patent Number: 5,525,441
Reddy et al. [45] Date of Patent: Jun. 11, 1996
[54] FOLDED ELECTRODE CONFIGURATION 4,948,685 8/1990 Ohsawa et al 429/245 X
FOR GALVANIC CELLS
[75] Inventors: Thomas B. Reddy, Bronxville; Pedro Rodriguez, Ossining, both of N.Y.
[73] Assignee: Power Conversion, Inc., Elmwood
Park, N.J.
[21] Appl. No.: 305,439
[22] Filed: Sep. 13, 1994
[51] Int. CI.6 H01M4/66
[52] U.S. CI 429/127; 429/192; 429/224;
429/245
[58] Field of Search 429/127, 245,
429/233, 192, 220, 224
[56] References Cited
U.S. PATENT DOCUMENTS
Primary Examiner—John S. Maples
Attorney, Agent, or Firm—Breiner & Bremer
[57] ABSTRACT
A high density cell stack is provided utilizing strips of flexible cathode material and flexible anode materials folded over each other at right angles. A suitable anode material is lithium and a suitable cathode material is manganese dioxide. The disclosed cell stacks are rapidly manufactured to provide high density cells with good mechanical stability and good stability against shorting.
3,272,653 9/1966 Solomon et al 429/229 X 9 Claims, 5 Drawing Sheets
