Charge equalization systems and methods for battery systems and uninterruptible power supplies
US10873207B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 4, 2019 |
| Grant date | Dec 22, 2020 |
| Priority date | — |
| Expiry date | Jun 4, 2039 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/70
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A battery system a plurality of battery strings, a charge equalization circuit, a relay matrix, and a balance controller. The plurality of battery strings comprises at least three batteries connected in series, where the battery strings are connected in parallel. The charge equalization circuit is capable of transferring charge between a pair of series connected batteries. The relay matrix is operatively connected between the charge equalization circuit and the plurality of battery strings. The balance controller operates the relay matrix based on at least one of a voltage and a current of any one of the batteries such that the charge equalization circuit is connected across any one of the pairs of series connected batteries in any one of the plurality of battery strings such that the charge equalization circuit transfers charge between the batteries in the pair of series connected batteries to which the charge equalization circuit is connected.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.