Battery equalization method and device, and battery management system with closed circuit voltage measurements obtained by charging and discharging pluses
US12261465B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 5, 2022 |
| Grant date | Mar 25, 2025 |
| Priority date | — |
| Expiry date | Oct 5, 2042 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01M2010/4271
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
This application describes a battery equalization method and device, and a battery management system. The battery equalization method includes: obtaining a first closed circuit voltage of N cells in a duration of a pulse charge current and a second closed circuit voltage of the N cells in a duration of a pulse discharge current, where the N cells constitute a battery, and N is a positive integer; determining a relationship of SOC values between the N cells based on the first closed circuit voltage and the second closed circuit voltage; and performing charge equalization on target cells, where the target cells are determined from the N cells based on the relationship of SOC values.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.