Battery cell having edge support and method of making the same
US6946218B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 6, 2002 |
| Grant date | Sep 20, 2005 |
| Priority date | — |
| Expiry date | Sep 2, 2023 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49108
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The present invention, a cell layer edge support, provides longer battery cell life while minimizing the possibility of shorts within the cell. More specifically, an edge support layer is positioned around at least a portion of the smaller electrode, either the anode or the cathode, in the cell to define a supporting perimeter comparable to the perimeter of the larger electrode. The support layer generally comprises a polymeric material which helps to absorb pressures exerted on the cell layers during packaging. The anode, cathode, support layer and a separator layer placed between the anode and the cathode may be joined to form a battery. Preferably, a plurality of cells having the support layer may be joined to form a higher energy, longer life battery.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.