Electrical energy storage apparatus having a balun for balancing voltages of storage cells
US10056765B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 11, 2014 |
| Grant date | Aug 21, 2018 |
| Priority date | — |
| Expiry date | Dec 29, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02J7/345
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The present invention relates to an electrical energy storage apparatus having a plurality of electrical storage cells connected in series and to an inductive balun for balancing the storage cell voltages, wherein the balun has a balancer transformer having separate single coils for the storage cells and has a respective electric switch for each storage cell. Provision is made in accordance with the invention that the coils of the balancer transformer are connected to a pole of the respective storage cell via a respective at least one inductance and a switch connected to the named inductance, with the switch associated with one respective storage cell being connected via a diode to a pole of a storage cell respective arranged upstream or downstream.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.