Button type electric cells
US4137375A · kind A · utility
9Cited by
5References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 16, 1978 |
| Grant date | Jan 30, 1979 |
| Priority date | — |
| Expiry date | Jan 16, 1998 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01M6/12
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The invention relates to button type electric cells, i.e., cells comprising two cups containing, respectively, positive and negative active materials, fitted into each other and insulated from each other by a seal. The positive cup contains at least one compartment situated between it and the positive material and delimited on the positive material side by a perforated sheet; the compartment is filled with electrolyte when the active materials are in the state where they take up the greatest volume. Particularly applicable to lithium cells whose positive material is cupric oxide, lead oxide or red lead.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.