Battery resistance diagnosis device and method
US11846680B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 17, 2020 |
| Grant date | Dec 19, 2023 |
| Priority date | — |
| Expiry date | Nov 15, 2040 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A battery resistance diagnosis device includes a current supply unit configured to supply a preset fixed current to a battery cell, a voltage measurement unit configured to measure an open circuit voltage of the battery cell while the fixed current is supplied, an external resistance calculation unit configured to calculate an external resistance value of the battery based on the fixed current and the open circuit voltage of the battery cell, and an abnormality diagnosis unit configured to diagnose a battery abnormality due to a voltage drop by comparing the calculated external resistance value with a preset external resistance value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.