Device for controlling the charging and discharging of a storage battery
US4194146A · kind A · utility
37Cited by
5References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 11, 1977 |
| Grant date | Mar 18, 1980 |
| Priority date | — |
| Expiry date | Aug 11, 1997 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A device for controlling the charging and discharging of a storage battery has an input to which there is applied an input voltage proportional to the magnitude and sign of the current flowing through the battery. The input voltage is amplified and integrated to provide an integral which is an image of the state of charge of the battery. In this invention the input voltage is converted to a pulse train whose frequency is proportional to the magnitude of the input voltage and the pulses are added or subtracted according to its sign. The pulse total forms the said image of the state of charge of the battery.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.