Method for detecting a faulty cell in an electric battery
US11977127B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Jan 15, 2019 |
| Grant date | May 7, 2024 |
| Priority date | — |
| Expiry date | May 24, 2041 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/70
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method for detecting a faulty cell in an electric battery pack includes the following steps: measuring the no-load voltage at the terminals of each cell of the battery pack; calculating the deviation between the no-load voltage measured at the terminals of the cell and an average known no-load voltage as a function of the number of days during which the battery pack was not used; calculating the difference between the calculated deviation and a quantity n·σ, n being an integer no lower than 1, and σ being a known standard deviation which is a function of the number of days during which the battery pack was not used; and detecting a faulty cell if the difference is greater than zero.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.