Film type battery
US5378557A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 7, 1993 |
| Grant date | Jan 3, 1995 |
| Priority date | — |
| Expiry date | Apr 7, 2013 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
In a film type battery comprising a generating element which is formed by laminating a negative active material, an electrolyte and a positive active material into a layer shape, (1, 2, 3), terminal plates (5, 6) which are installed on and under the generating element and serve also as a current collector and a container, and a frame-shaped sealing material (4) which is installed on peripheral edges of the terminal plates, seals the generating element in between the both terminal plates and insulates one terminal plate from the other; the sealing material is improved. For example, the sealing material is formed into a vertical-type multi-layer structure, in which at least one layer is composed of a layer (41, 42) comprising metal and the other layer (43) is composed of an electric insulator. Thereby, a mechanical strength of the sealing material or a battery becomes large and the battery becomes hard to be bent. Accordingly, an ingress of atmosphere from a sealing portion and a leakage of electrolyte therefrom can be prevented, a deterioration of battery performance can be prevented, and a long-term reliability can be improved.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.