Method for detecting low voltage cell and battery management system for providing the method
US12024052B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 21, 2021 |
| Grant date | Jul 2, 2024 |
| Priority date | — |
| Expiry date | Jul 4, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01M2010/4271
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A low voltage cell detecting method and a battery management system includes a cell monitoring IC connected to respective ends of a plurality of battery cells and measuring a cell voltage and a battery current of the respective battery cells, and a main control circuit for calculating states of charge (SOCs) of the respective battery cells based on at least one of the measured cell voltages and the battery currents of the battery cells. The main control circuit compares a difference value between first SOCs of the battery cells calculated before a service of a vehicle terminates and second SOCs of the battery cells calculated when the service of the vehicle resumes to a predetermined discharging threshold value, determines whether the battery cells respectively have a low voltage according to the comparison, and detects a low voltage cell.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.