Feasibility Analysis for an Environmental Nickel-Metal Hydride Aircraft Battery
Abstract
Nickel-Metal Hydride prismatic cells have been designed, fabricated, and characterized for performance across the temperature range of -40 C to + 70 C. The optimized designs were validated in controlled laboratory conditions and under simulated environmental testing conditions. All aspects of the cells were evaluated and selected optimization was designed into the cells to advance the Ni-MH technologies to attain the program target goals. Electrode formulations, processes, electrolyte percentages, separator materials and thickness, and assembly were evaluated in specific cell design configurations. The charging procedure and algorithms were determined and implemented. These test and evaluation conditions were recommended for repeatable charging and safety limits to independently confirm the performance of the prototype designed battery. One prototype battery was delivered having approximately 64 Wh/kg using cells with 43 Ah capacity at C/2. Among the key performance variables for this next generation battery are broad temperature range and minimal self-discharge. Both key performance variables were enhanced sufficiently to make the Ni-MH battery technology a strong alternative battery power source in military flight vehicles.
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 01, 2000
- Accession Number
- ADA399882
Entities
People
- John R. Fenter