Automatic switching arrangement for two batteries which are charged in parallel and discharged in series
US4297629A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 1, 1980 |
| Grant date | Oct 27, 1981 |
| Priority date | — |
| Expiry date | Apr 1, 2000 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The invention relates to an automatic switching arrangement for two batteries which are charged in parallel and discharged in series. The arrangement includes a control unit and a charging circuit; the control unit is a circuit which includes a transistor (T1), a resistor (R1) and a diode (D1) which is connected between two terminals of opposite polarities of the batteries (BT1) and (BT2), the transistor being blocked or conductive according to the direction of the voltage at the terminals of the diode; the transistor controls switching units (T2,T3) of the charging circuit. A switch (CT4, Th, CT11) can be disposed in series with the diode (D1). Application to stand-by batteries.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.