Method of testing secondary battery
US9261565B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 9, 2011 |
| Grant date | Feb 16, 2016 |
| Priority date | — |
| Expiry date | Feb 5, 2032 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P70/50
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A method of testing a secondary battery includes step A of charging the secondary battery to a predetermined charge voltage, step B of setting aside the secondary battery for a predetermined time (tb) after the step A, step C of discharging the secondary battery to a predetermined discharge voltage after the step B, and step D of detecting a battery voltage increase for a preset time (t2) after a predetermined time (t1) has elapsed after the step C. This method of testing a secondary battery can evaluate a measurement of how much the negative electrode active material layer covers the positive electrode active material layer based on the battery voltage increase detected in the step D.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.