Battery management system
US6501249B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 20, 2000 |
| Grant date | Dec 31, 2002 |
| Priority date | — |
| Expiry date | Jul 20, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02J7/0048
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A battery management system is provided having a battery management unit (BMU) and an integrated switch and sense device (SSD) for accurately measuring the charge state of a rechargeable battery and providing charge protection for the rechargeable battery. The system includes a load, a integrated power and sense device including a power device and a sense device, the integrated power and sense device connected between the rechargeable battery and the load wherein the sense device provides a mirror current proportional to the current in the power device, a first circuit that measures the rechargeable battery current using the mirror current, and a second circuit that measures the charge in the rechargeable battery using the mirror current.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.