Power control for hybrid fuel cell systems
US7829229B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 15, 2006 |
| Grant date | Nov 9, 2010 |
| Priority date | — |
| Expiry date | May 3, 2029 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/50
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A hybrid fuel cell system that includes a fuel cell stack and a high voltage battery. The fuel cell system also includes a cell voltage controller that controls the average cell voltage of the cells in the fuel cell stack, a damped driver request module that damps a driver power request signal, and a power balancing module. The power balancing module maintains the cell voltage of the cells in the stack within a predetermined range, and uses excess power from the stack beyond what is requested to charge the battery. The power balancing module includes a base load limiter that prevents the cell voltage from going above a predetermined value, unless the battery is at is maximum state of charge.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.