Apparatus and method for testing remaining capacity of a battery
US6823274B2 · kind B2 · utility
6Cited by
5References
30Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 8, 2002 |
| Grant date | Nov 23, 2004 |
| Priority date | — |
| Expiry date | Jan 23, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R31/378
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An apparatus and method of determining remaining capacity in a battery, including the following steps: detecting the presence of a battery within one of a plurality of specified terminals; automatically initiating a timed pulse load test on the battery upon detection in a terminal; continuously passing current from the battery through a specified resistive load for the terminal; measuring a voltage of the battery while under the resistive load; comparing the measured voltage to a discharge voltage profile of the battery; and, computing the measured voltage as a percent of remaining battery capacity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.