Smart battery power availability feature based on battery-specific characteristics
US5541489A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 15, 1994 |
| Grant date | Jul 30, 1996 |
| Priority date | — |
| Expiry date | Dec 15, 2014 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A smart battery that predicts whether or not a battery can provide a requested amount of additional power based on battery-specific capacity, self-discharge, and discharge characteristics. A non-volatile memory stores the battery-specific characteristics which are functions of the environmental conditions of the battery and/or the battery current. One circuit measures the environmental conditions of the battery, such as temperature. Another circuit measures the battery current (charge or discharge). In response to a request, the smart battery determines whether or not the additional power can be provided based on the present battery capacity, the present discharge rate of the battery, the environmental conditions of the battery, and the battery characteristics. A user or power management system can use such power availability information to tune the power consumption and performance of an electronic system powered by the battery.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.