Bi-directional optimizers for battery storage systems with galvanic isolation
US11146079B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 28, 2019 |
| Grant date | Oct 12, 2021 |
| Priority date | — |
| Expiry date | Jun 4, 2040 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E70/30
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Equalization of the state of health of multiple serial strings of battery cells connected in parallel to a common direct current bus in an energy storage system utilized with a utility-sized renewable energy system or other system where optimum operational battery health is a requirement, and in particular is provided by a separate bi-directional DC-to-DC converter in each serial string that controls the charge and discharge of the multiple serial strings of battery cells to maximize efficiency of the stored energy and also provides galvanic isolation between the direct current bus and the multiple serial strings of battery cells.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.