Capacity degredation in a lead acid battery method and apparatus
US7345453B2 · kind B2 · utility
1Cited by
11References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 1, 2005 |
| Grant date | Mar 18, 2008 |
| Priority date | — |
| Expiry date | Dec 30, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R31/385
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
In accordance with the invention, there is a battery defect detection method comprising applying a current ramp to a battery; determining a first time (t1) when a current of the battery reaches a maximum current (Ipeak), and determining a second time (t2) when a terminal voltage of the battery reaches a maximum voltage (Vpeak). The method also includes determining a differential (d), wherein (d)=/(t1)−(t2)/, and wherein (d) corresponds to a magnitude of defects in the battery.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.