Method for the automatic determination of battery chemistry in portable electronic devices
US6215275A · kind A · utility
129Cited by
5References
3Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 29, 1999 |
| Grant date | Apr 10, 2001 |
| Priority date | — |
| Expiry date | Oct 29, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R31/378
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method that distinguishes different battery chemistries in portable electronic devices using a simple electrical test. The present method facilitates accurate fuel gauging as well as providing a safe in-device recharging scenario, eliminating the possibility that an end-user might attempt recharging a non-rechargeable battery. A simple circuit is provided in the electronic device that, in conjunction with a microcontroller, measures several distinct voltages across a newly inserted battery. A lookup table is then utilized to determine the probable battery chemistry.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.