Dispersion of stored energy within a battery system at risk of failure
US11855264B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 8, 2021 |
| Grant date | Dec 26, 2023 |
| Priority date | — |
| Expiry date | Apr 20, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01M2010/4271
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A method and system for dispersing stored energy in an energy storage system to delay or arrest propagation of thermal runaway and thermally-induced cascading failures. The system includes a plurality of battery sub-assemblies and DC-DC converters connected to a shared DC bus through which energy may be exchanged. The system may be interfaced to an AC power grid or DC power system through an additional power converter. The method of dispersing stored energy uses this system to charge and discharge sub-assemblies such that the system is less susceptible to propagation of thermal runaway. The method determines, based on awareness of current system state, battery types, and electrical and thermal structure, the sequence of charging and discharging actions to best inhibit thermal runaway while preserving the system's ability to perform subsequent energy redistribution.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.