Device and method for displaying charge capacity information of smart battery
US6483274B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 29, 2002 |
| Grant date | Nov 19, 2002 |
| Priority date | — |
| Expiry date | Jan 29, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02J7/0048
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A device and a method for displaying an exact charge capacity of a smart battery includes a portable electric device including a control unit for power management. The portable electric device includes a battery for providing a relative state of charge (RSOC), a control unit for controlling the device to display battery residual capacity information by receiving the RSOC from the battery, and a display unit for displaying the battery residual capacity information. Here, the control unit detects an output voltage of the battery, compares the detected voltage with the RSOC, and controls the device to display the battery residual capacity information in response to data corresponding to the detected voltage, when the battery is in a period of a first low battery and the detected voltage is different from the RSOC, or controls the device to display the battery residual capacity information in response to the RSOC when the battery is in a period of a second low battery lower than the first low battery. Thus, the portable electric device can display the exact battery residual capacity information by correcting a period where an error is generated between the RSOC and the detected voltage…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.