Method and apparatus for a multi-cell rechargeable energy storage device
US12103429B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | May 11, 2023 |
| Grant date | Oct 1, 2024 |
| Priority date | — |
| Expiry date | Jun 22, 2043 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01M2220/20
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A method and a system for a high-voltage (HV) battery pack having multiple rechargeable energy storage devices (RESSs) that are connectable to an external load via a power bus via a pre-charge circuit in parallel with a first electrical contactor. The RESSs are monitored via current sensors. The current sensors monitor current levels between the RESSs and the power bus, detect a low current level from one of the current sensors, identify one of the RESSs associated with the low current level, activate the respective pre-charge circuit, monitor the electrical current, and determine a state of the respective first electrical contactor based upon the electrical current.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.