Method for testing all solid state battery, method for producing all solid state battery, and method for producing battery pack
US10753978B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 17, 2019 |
| Grant date | Aug 25, 2020 |
| Priority date | — |
| Expiry date | Apr 17, 2039 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P70/50
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method for testing an all solid state battery with which the presence of short circuit or the presence of defect causing short circuit can be detected with high accuracy by a comparatively simple method in which a voltage is applied to a battery and the current value thereof is measured. The method comprising steps of: a resistance increasing step of increasing resistance of an all solid state battery to 3.2*108 Ω·cm2 or more: a voltage applying step of applying voltage to an all solid state battery of which the resistance is increased; and a judging step of judging acceptability of the all solid state battery based on a current value measured in the voltage applying step; and the voltage applying step includes a first voltage applying treatment of applying voltage Vi, a second voltage applying treatment of applying voltage V2 corresponding to the reverse voltage of the voltage Vi after the first voltage applying treatment, and a third voltage applying treatment of applying voltage V3 corresponding to the reverse voltage of the voltage V2 after the second voltage applying treatment; and in the judging step, acceptability of the all solid state battery is judged based on current v…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.