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

Award Information

Agency:
Department of Energy
Branch:
N/A
Award ID:
84225
Program Year/Program:
2008 / SBIR
Agency Tracking Number:
83042
Solicitation Year:
N/A
Solicitation Topic Code:
N/A
Solicitation Number:
N/A
Small Business Information
Sbe Inc
81 Parker Road Barre, VT 05641
View profile »
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No
 
Phase 2
Fiscal Year: 2008
Title: High Energy Density, Low-Cost, High Temperature Capacitors for Hybrid Vehicles
Agency: DOE
Contract: DE-FG02-07ER84870
Award Amount: $747,477.00
 

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.

Principal Investigator:

Terry Hosking
Mr
8024764146
TerryH@sbelectronics.com

Business Contact:

Edward Sawyer
Mr
8024764146
edsawyer@sbelectronics.com
Small Business Information at Submission:

Sbe Inc
131 S Main St Barre, VT 05641

EIN/Tax ID: 731645998
DUNS: N/A
Number of Employees:
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No