Galvanically isolated charge balance system
US7612537B2 · kind B2 · utility
36Cited by
2References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 25, 2007 |
| Grant date | Nov 3, 2009 |
| Priority date | — |
| Expiry date | Apr 27, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02J7/0048
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A galvanically isolated charge balance system for a multicell battery includes a balancing circuit associated with each cell; each balancing circuit including a flying capacitor; a variable conductance switch; and a biasing circuit for the variable conductance switch; and a galvanically isolating MEMS switching device for selectively connecting the flying capacitor to a voltage supply to charge it to a predetermined voltage and to the biasing circuit for setting the variable conductance switch to adjust the charge on its associated cell to a preselected level.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.