High Energy Density, Low-Cost, High Temperature Capacitors for Hybrid Vehicles

Award Information
Agency:
Department of Energy
Branch
n/a
Amount:
$747,477.00
Award Year:
2008
Program:
SBIR
Phase:
Phase II
Contract:
DE-FG02-07ER84870
Award Id:
84225
Agency Tracking Number:
83042
Solicitation Year:
n/a
Solicitation Topic Code:
n/a
Solicitation Number:
n/a
Small Business Information
131 S Main St, Barre, VT, 05641
Hubzone Owned:
N
Minority Owned:
N
Woman Owned:
N
Duns:
144268125
Principal Investigator:
TerryHosking
Mr
(802) 476-4146
TerryH@sbelectronics.com
Business Contact:
EdwardSawyer
Mr
(802) 476-4146
edsawyer@sbelectronics.com
Research Institute:
n/a
Abstract
Currently, no low-cost capacitors provide an elevated temperature, high reliability solution to the DC Bus Inverter need in hybrid electric vehicles. In previous work, an annular film capacitor design, which showed potential for use in the DC Bus application, was developed. The unique shape of the capacitor enables the potential use of polypropylene film at 105°C, a requirement for this application. However, the characteristics of the device in this application over transportation lifetimes need to be understood, and the overall design must be optimized. In Phase I, the characteristics of all of the materials that make up the capacitor were profiled as a function of temperature and fed into a sophisticated modeling program. The results, which were compared with actual tests of an annular film capacitor, confirmed the reliable 105°C operation of the device as a DC Bus Capacitor. In Phase II, the final material selections will be optimized for reliability, a low cost but reliable interconnect scheme will be developed, and a test package (which will allow power-train transportation designers to confidently specify the device) will be produced. In addition, modeling simulations to predict failure modes and lifetimes will be compared with actual test results of manufactured capacitors. Commercial Applications and Other Benefits as described by the awardee: A low-cost, polypropylene film used as a DC Bus Capacitor, which requires nothing more than available 105°C engine coolant, would enable the potential elimination of a separate coolant loop and reduce the cost and weight of hybrid electric vehicles.

* information listed above is at the time of submission.

Agency Micro-sites


SBA logo

Department of Agriculture logo

Department of Commerce logo

Department of Defense logo

Department of Education logo

Department of Energy logo

Department of Health and Human Services logo

Department of Homeland Security logo

Department of Transportation logo

Enviromental Protection Agency logo

National Aeronautics and Space Administration logo

National Science Foundation logo
US Flag An Official Website of the United States Government