Battery case forming sheet and battery packet
US8323828B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 12, 2003 |
| Grant date | Dec 4, 2012 |
| Priority date | — |
| Expiry date | Sep 9, 2029 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31938
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A battery packet (50) comprises a battery case (51) formed by processing a battery case forming laminated sheet (10), a battery 50a contained in the battery case (51), and tabs (59, 60) extending outside from the battery case (51). The battery case forming laminated sheet (10) is formed by laminating a first base film layer (1a), i.e., an outermost layer, a metal foil layer (2), and a heat-adhesive resin layer (3) in that order. The first base film layer (1a) is a biaxially oriented polyethylene terephthalate resin film or a biaxially oriented nylon resin film. The metal foil layer (2) is an aluminum or copper foil. The heat-adhesive resin layer (3) is formed of a polyolefin resin, more preferably, of an acid-denatured polyolefin resin.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.