Energy storage system with ultracapacitor and switched battery
US7667438B2 · kind B2 · utility
21Cited by
9References
11Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Nov 10, 2005 |
| Grant date | Feb 23, 2010 |
| Priority date | — |
| Expiry date | Nov 5, 2026 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/70
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
An energy storage system for a vehicle includes an ultracapacitor that is electrically coupled in parallel with a battery through a diode connected in series with the battery. The ultracapacitor delivers the energy required for all high current surges that occur during engine start, acceleration, and regeneration. The battery is used only to assist with longer duration, high energy loads, such as accessory loads when an engine of the vehicle is not running. In other words, the battery conducts only during longer and less-frequent pulses and, therefore, does not have to withstand high-power pulses.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.