Manufacture of flexible thin layer electrochemical cell

• US 20040209160A1
• Filed: 05/06/2004
• Published: 10/21/2004
• Est. Priority Date: 06/18/2001
• Status: Abandoned Application

• Current Assignee: Shalom Luski, Zvi Nitzan
• Original Assignee: Shalom Luski, Zvi Nitzan
• Inventors: Nitzan, Zvi, Luski, Shalom
• Application Number:
  US10/839,149
• Publication Number:
  US 20040209160A1
• Time in Patent Office: Days
• US Class Current: 429/144
• CPC Class Codes: H01M 10/0436 Small-sized flat cells or batteries for portable equipment
• CPC Class Codes: H01M 10/0486 Frames for plates or membranes
• CPC Class Codes: H01M 50/46 Separators, membranes or diaphragms characterised by their combination with electrodes
• CPC Class Codes: H01M 50/461 with adhesive layers between electrodes and separators
• CPC Class Codes: H01M 6/12 with flat electrodes
• 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
• CPC Class Codes: Y10T 29/49112 including laminating of indefinite length material
• CPC Class Codes: Y10T 29/49115 including coating or impregnating

Abstract

A flexible thin layer electrochemical cell and a method of using a lamination process for manufacture thereof, the cell having a plurality of layers including a first electrode layer and a second electrode layer with a separator interspersed therebetween and wherein the separator serves as a lead element upon which the other layers are laminated using an adhesive frame mounted on the lead element.

Claims

1. A separator layer for use in the production of a flexible thin layer electrochemical cell, said separator layer comprising an impregnator applied thereto, which impregnator is susceptible to impregnate said separator layer during lamination processing applied to said layer to form said cell.

2. A separator layer according to claim 1, wherein said impregnator comprises an adhesive material.

3. A separator layer according to claim 2, wherein said adhesive material is selected from the group consisting of a hot melt material, a hot melt pressure sensitive material and a UV curable pressure sensitive material.

4. A separator layer according to claim 1, wherein said impregnator comprises an impregnation agent operable to cause impregnation into at least one of said layers of at least one material of said impregnator.

5. A separator layer according to claim 1, wherein said impregnator is operable to restrict electrical conductivity in a region of any electrically conductive layer into which it is absorbed.

6. A separator layer according to claim 4, wherein said impregnation agent is selected from the group consisting of polyisobutylene, ethyl cellulose, a fluoro polymer, an acrylic resin, a vinyl resin, and polyurethane.

7. A separator layer according to claim 1, having a first side and a second side and having said impregnator applied on both of said first side and said second side for lamination thereto of further layers to form said cell.

8. A separator layer according to claim 7, having a positive electrode layer laminated to said first side and a negative electrode layer laminated to said second side, each electrode layer further comprising electrolyte.