Method and apparatus for charging storage batteries
US4125802A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Sep 21, 1976 |
| Grant date | Nov 14, 1978 |
| Priority date | — |
| Expiry date | Sep 21, 1996 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Method and apparatus for charging storage batteries in which the charging rate is varied as a function of temperature are disclosed. The battery temperature and ambient temperature are sensed and compared. When the battery temperature is less than the ambient temperature plus a first temperature difference, a first charging rate is provided; when the battery temperature is greater than the ambient temperature plus the first temperature difference but less than the ambient temperature plus a second temperature difference which is greater than the first temperature difference, an intermediate charging rate is provided which varies with the comparison of the battery and ambient temperatures between the first charging rate and a second charging rate which is less than the first charging rate; and when the battery temperature is greater than the ambient temperature plus the second temperature difference, the second charging voltage is provided. Alternatively, charging may be cut-out instead of proceeding at the second charging rate. The method disclosed herein may advantageously be used to charge all types of storage batteries.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.