Cell or battery state of discharge indicator
US4048388A · kind A · utility
Assignees
Inventor
Key dates
| Filing date | Mar 24, 1976 |
| Grant date | Sep 13, 1977 |
| Priority date | — |
| Expiry date | Mar 24, 1996 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01M6/5044
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The invention relates to a discharge indicator of an electrochemical generator such as a cell or battery comprising a consumable negative electrode basically containing powdered metal, for example, zinc. The said indicator is constituted by an enclosure containing a substance which can be seen from the outside of the battery and having an appearance which changes on coming into contact with the electrolyte, the said enclosure being closed by a metal plate arranged within the negative electrode and which is made of a material chosen from among zinc, zinc alloys, zinc amalgams. Application of the indicator is to air depolarization cells.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.