Development of a SEAL Delivery Vehicle Battery
Abstract
The goal of this program was to demonstrate performance in cells sized for use in the SEAL Delivery Vehicle. Development efforts by Saft, America, Inc. are reported for batteries to power undersea vehicles. Large, prismatic cells were designed, built, and tested in sizes up to 150 Ah, and demonstrated energy densities up to 130 Wh/Kg. The anodes were either metallic lithium or a lithium-intercalating carbon. Cathodes were lithiated metal oxides of cobalt or nickel (Li(x)CoO2 or Li(x)NiO2). The electrolyte was 1.2 M LiAsF6 in mixed solvents ethylene carbonate, propylene carbonate, and dimethyl carbonate in a 1:1:2 ratio. Several different cell designs were explored, some of which included novel features such as case strengthening by pinning together opposing faces and orienting the plates parallel to the narrow case faces. These and other design features were needed to address the effect of stack bulging during cycling. Electronics to control charge and discharge and to ensure safe operation were proposed. Safety of the electrochemistries was evaluated by testing 4/5 A-size cells.
Document Details
- Document Type
- Technical Report
- Publication Date
- Nov 01, 1997
- Accession Number
- ADA354961
Entities
People
- Antonio Romero
- Joseph L. Gessler
- Robert J. Staniewicz
Organizations
- Naval Surface Warfare Center Carderock Division