Integrated Photovoltaic Energy Scavenging and Storage System

Award Information
Agency:
Department of Defense
Branch
Defense Advanced Research Projects Agency
Amount:
$98,969.00
Award Year:
2010
Program:
SBIR
Phase:
Phase I
Contract:
W31P4Q-10-C-0043
Award Id:
96692
Agency Tracking Number:
09SB2-0227
Solicitation Year:
n/a
Solicitation Topic Code:
DARPA 09-010
Solicitation Number:
n/a
Small Business Information
9950 Wakeman Drive, Manassas, VA, 20110
Hubzone Owned:
N
Minority Owned:
N
Woman Owned:
N
Duns:
604717165
Principal Investigator:
Philip Johnson
Senior Electrical Systems Engineer
(703) 396-6352
pjohnson@aurora.aero
Business Contact:
Scott Hart
Financial Analyst
(617) 500-0536
shart@aurora.aero
Research Institution:
n/a
Abstract
The majority of modern portable, wireless electrical devices are powered by batteries; when the batteries are depleted they must be replaced or recharged, which is a problem when the system operates in remote areas or an enemy's region. The capability to scavenge energy from the environment to recharge batteries and/or directly power electronics is essential to increase system lifetime and utility. Solar radiation is the most abundant and highest power source for scavenging, but is completely absent at night. Consequently, alternative power system designs are needed which supplement solar based scavengers with complementary techniques minimizing impact on system size and weight. Aurora proposes to develop an integrated energy scavenging and storage system which utilizes: 1) triple junction solar cells for highly efficient solar energy scavenging, 2) advanced infrared photovoltaics for night time thermal energy scavenging, and 3) thin film lithium cell technology to produce a power dense storage system. These component technologies will be stacked in a layered fashion and integrated with the system structure to provide additional weight savings and footprint reduction. The proposed system has the capability to produce as much as 30 mW/cm2 from incident solar radiation and convert thermal radiation at efficiencies as high as 3%.

* information listed above is at the time of submission.

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