SEALED AIRCRAFT BATTERIES.
AIR FORCE AERO PROPULSION LAB WRIGHT-PATTERSON AFB OHIO
Pagination or Media Count:
Technological advances in sealed alkaline batteries and battery charge - charge conditioning control techniques make the sealed battery system an attractive candidiate for aircraft application. Forecasted major advantages of sealed battery systems over existing vented aircraft batteries are improved flight safety, reduced maintenance, longer service life, compatibility with aircraft electrical system, and system weight reduction. Utilization of sealed nickel-cadmium batteries for aircraft applications is considered possible by late 1968. Sealing the battery and integrating it with the aircraft electrical system introduces several major problems compatibility with the environment and electrical system of the aircraft, providing a fast recharge capability, selecting and maintaining the proper voltage on charge, eliminating cell internal pressure buildup, developing reliable fail-safe features, and maintaining sealed operation for extended time periods. Efforts are in progress at the Air Force Aero Propulsion Laboratory to solve or to minimize these problems. The technical approaches, the progress in problem solution, and supporting technical data are reviewed. The approaches include improvement of electrochemical performance, end-of-charge control techniques, and methods for conditioning the aircraft bus voltage for optimum battery performance. Author
- Electrochemical Energy Storage