Control circuit for multiple battery systems with capacity gauge on end equipment
US6650089B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 16, 2002 |
| Grant date | Nov 18, 2003 |
| Priority date | — |
| Expiry date | Oct 16, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02J7/005
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A capacity gauge is provided that measures a selected battery capacity of a plurality of batteries in a multiple battery system. A capacity gauge and a battery current sense resistor reside on the end equipment, while the battery pack contains minimal information associated with the battery pack. Control circuits provide for proper pack selection and pack connection timing, as well as capacity gauge synchronization. Power up/down circuits provide power to control logic, the selection circuits and capacity gauge at power up, power down and battery pack removal. The system is powered by a selected battery pack after the battery pack selection is executed, and the selected battery pack monitored by the capacity gauge.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.