System for charging monitoring batteries for a microprocessor based method
US6377028B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 29, 1996 |
| Grant date | Apr 23, 2002 |
| Priority date | — |
| Expiry date | Jul 29, 2016 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02J7/0049
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A battery monitoring/control device includes a monitor/control device (35) that is operable to be integrated with a microprocessor system. The system includes a CPU (12) that interfaces with a data bus (14) and an address bus (16). The CPU (12) interfaces through a data line (40) with the control/monitor device (35) and control lines (28) and (34). Commands and data can be input to the control/monitor circuit (35) and data received therefrom. The control/monitor device (35) includes a controller/data register block (36) and a battery charge control/monitor block (44). The device (35) is operable to monitor the battery voltage of a secondary battery (46) during charging thereof and to control the rate of charge through a transistor (66). The battery monitor (90) determines when the voltage on the battery (46) reaches a predetermined level indicating full-charge. A discharge circuit (94) controls a discharge transistor (72) to discharge the battery (46) through a sense resistor (68) for conditioning of the battery. The system receives current from the battery (46) through the resistor (68), the current monitored by a Gas Gauge monitor (92). The Gas Gauge monitor (92) maintains a meas…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.