Method and system for predicting the time required for low voltage expression of a secondary battery, and aging method of the secondary battery using the same
US10502794B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 28, 2019 |
| Grant date | Dec 10, 2019 |
| Priority date | — |
| Expiry date | Feb 28, 2039 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P70/50
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method and system for predicting the time required for low voltage expression of a secondary battery, including (a) obtaining a leakage current by inputting a voltage of a battery cell of the secondary battery, measuring a freezing resistance of a battery cell, and dividing an input voltage by a measured freezing resistance, (b) obtaining a discharge capacity difference by setting a reference value of a voltage drop for selecting a low voltage defect and obtaining a discharge capacity difference between the input voltage and a voltage dropped therefrom by the reference value, and (c) dividing the discharge capacity difference by the leakage current to thereby calculate a time required for low voltage expression.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.