Method and apparatus for measurement of charge in a battery
US6522104B1 · kind B1 · utility
17Cited by
12References
32Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 20, 2000 |
| Grant date | Feb 18, 2003 |
| Priority date | — |
| Expiry date | Aug 1, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02J7/0048
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An integrated power and sense device provides a current used in measuring the charge of a rechargeable battery. The charge measurement apparatus for a rechargeable battery powered system includes an integrated power and sense device having a power device and a sense device, connected to the rechargeable battery and a load; the sense device operatively coupled to provide a mirror current that is a fixed ratio of the current in the power device, and a first circuit that uses the mirror current to measure the charge in the rechargeable battery.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.