Battery charging control circuits
US3936718A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 16, 1974 |
| Grant date | Feb 3, 1976 |
| Priority date | — |
| Expiry date | Oct 16, 1994 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S320/30
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An improvement in the battery charging control circuit of our co-pending Application Serial No. 400,001, and more particularly a new means for detecting the onset of gassing during the charging of a battery, such as lead-acid battery. In the exemplary embodiment described in our co-pending Application Serial No. 400,001, the onset of gassing was assumed to be imminent upon the attainment of a particular battery cell voltage. The present invention provides an improved means for determining the true onset of gassing by recognition of a unique point in the temporal pattern of the differences between successive registered battery voltages as measured during interruptions of charging.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.