Battery management during prelaunch activities has always required special attention and careful planning. The transition from nickel-cadmium to nickel-hydrogen batteries, with their higher self discharge rate and lower charge efficiency, as well as longer prelaunch scenarios, have made this aspect of spacecraft management even more challenging. The NASA AXAF-I Program requires high battery state of charge at launch. The use of active cooling, to ensure adequate state of charge during prelaunch charge, trickle charge, and stand was considered and proved to be expensive and difficult to implement. Alternate approaches were considered. A procedure including optimized charging and low rate (
Nickel-hydrogen battery state of charge management in the absence of active cooling
Überwachung des Ladungszustands von Nickel-Wasserstoffbatterien ohne aktive Kühlung
1995
6 Seiten, 9 Bilder, 6 Tabellen, 2 Quellen
Aufsatz (Konferenz)
Englisch
Nickel-Hydrogen Battery Fault Clearing at Low State of Charge
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|Microprocessor-based autonomous nickel-hydrogen battery management system
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