Smart battery disconnect and protection architecture for airborne high-power modular multi-string battery pack
US11967842B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 13, 2021 |
| Grant date | Apr 23, 2024 |
| Priority date | — |
| Expiry date | Sep 7, 2042 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/70
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Methods and systems for protection/disconnect of airborne high-power/energy high-voltage modular multi-string battery packs (such as battery packs for airborne electric propulsion systems). The methods and systems are based on a dissimilar/redundant distributed battery pack protection architecture and use a smart mid-point battery disconnect in conjunction with centralized battery management system. The resulting battery disconnect/protection system is configured to detect bus faults, load faults and string faults and then take appropriate action to isolate the detected fault. For example, in response to a short circuit in one battery string, the faulty battery string may be disconnected from the positive and negative busbars while the remaining battery strings continue to provide power.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.