Method for determining amount of water to be added to a NiCd cell
US6258479A · kind A · utility
1Cited by
7References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 20, 1999 |
| Grant date | Jul 10, 2001 |
| Priority date | — |
| Expiry date | Aug 20, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Deficiencies in the electrolyte level of the cells of NiCd battery can be detected by measuring the internal resistance of the cells. Initially, data is collected for a battery type and capacity, correlating measured internal resistance with the amount of water that must be added to bring the cell resistance to an acceptable value. Subsequently, cells of other batteries of the same type and capacity can be measured to determine how much water must be added and the levels quickly restored. The polarization value of the cells can be used lieu of the internal resistance in the same fashion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.