Bipolar electrochemical battery of stacked wafer cells

US6503658B1 · kind B1 · utility

Assignee

• Electron Energy Corporation · US

Inventors

• Martin Klein · Ludwigsburg, DE
• Paula Margaret Ralston · Frederick, US
• Robert Plivelich · Waterbury, US

Key dates

• Filing date: Jul 11, 2001
• Grant date: Jan 7, 2003
• Expiry date: Jul 11, 2021

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T29/49112
• WIPO field: Electrical machinery, apparatus, energy
• WIPO sector: Electrical engineering

Abstract

The bipolar electrochemical battery of the invention comprises:a stack of at least two electrochemical cells electrically arranged in series with the positive face of each cell contacting the negative face of an adjacent cell, wherein each of the cells comprises(a) a negative electrode;(b) a positive electrode;(c) a separator between the electrodes, wherein the separator includes an electrolyte;(d) a first electrically conductive lamination comprising a first inner metal layer and a first polymeric outer layer, said first polymeric outer layer having at least one perforation therein to expose the first inner metal layer, said first electrically conductive lamination being in electrical contact with the outer face of the negative electrode; and(e) a second electrically conductive lamination comprising a second inner metal layer and a second polymeric outer layer, said second polymeric outer layer having at least one perforation therein to expose the second inner metal layer, said second electrically conductive lamination being in electrical contact with the outer face of the positive electrode; wherein the first and second laminations are sealed peripherally to each other to form an…