Improved Safety in Large Format Lithium-Ion Cells and Batteries

Award Information
Agency:
Department of Defense
Branch
n/a
Amount:
$749,105.00
Award Year:
2011
Program:
SBIR
Phase:
Phase II
Contract:
N00024-11-C-4014
Award Id:
n/a
Agency Tracking Number:
N093-197-0845
Solicitation Year:
2009
Solicitation Topic Code:
N093-197
Solicitation Number:
2009.3
Small Business Information
82 Mechanic Street, Pawcatuck, CT, -
Hubzone Owned:
N
Minority Owned:
N
Woman Owned:
N
Duns:
617158712
Principal Investigator:
GregMoore
Project Manager
(860) 599-1100
gmoore@yardney.com
Business Contact:
VincentYevoli
COO
(860) 599-1100
Vyevoli@yardney.com
Research Institute:
Stub




Abstract
Li-ion batteries are attractive candidates for use as power sources in military, aerospace, commercial, and vehicular applications. Outstanding properties of Li-ion include longer battery life, reduced weight and size, lower maintenance costs, higher power capacity and higher energy densities. However, there are issues with making a truly safe Li-ion battery. For this project, Yardney has approached making a safer battery by incorporating modeling and testing, and based on that moving forward towards larger cells for Navy applications. Though a goal is to make a Li-ion cell incapable of failing, reality has us accepting a cell failure, but preventing that occurrence from propagating. Improvements include materials internal to the cell to decrease the risk of an event and its magnitude upon such an occurrence, and then considering cell geometry and inter-cell separators to 1) remove that heat as rapidly to a"safe zone"as possible, and 2) to block a majority of the heat from causing a neighboring cell to also reach it"s activation energy for thermal runaway. In addition, electronics play a major role in monitoring, and in this project Yardney is incorporating some of their latest electronics to provide a hearty monitoring system, and a safer Li-ion battery.

* information listed above is at the time of submission.

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