Method and apparatus for indicating a low battery level
US9488695B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 15, 2014 |
| Grant date | Nov 8, 2016 |
| Priority date | — |
| Expiry date | May 7, 2035 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method and an apparatus for determining the battery level of a rechargeable battery used in a battery driven apparatus for driving a load and for indicating a low battery level; and a repeating measurement of the battery voltage and a determination of a threshold for indicating the low battery level. The running time of the apparatus while driving the load is accumulated since the last charging and is repeatedly stored as sequenced data-logger entries in a data-logger memory until a reset of the apparatus due to insufficient battery capacity or until charging of the battery. Threshold is determined after the reset based on the data-logger entries and a required remaining running time of the apparatus upon indication of low battery level.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.