Lithium Ion Battery (Lib) Charger: Spacesuit Battery Charger Design with 2-Fault Tolerance to Catastrophic Hazards - Paperback
Lithium Ion Battery (Lib) Charger: Spacesuit Battery Charger Design with 2-Fault Tolerance to Catastrophic Hazards - Paperback
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by Eric Darcy (Author), Frank Davies (Author), Nasa Technical Reports Server (Ntrs) (Created by)
Charger design that is 2-fault tolerant to catastrophic has been achieved for the Spacesuit Li-ion Battery with key features. Power supply control circuit and 2 microprocessors independently control against overcharge. 3 microprocessor control against undercharge (false positive: Go for EVA) conditions. 2 independent channels provide functional redundancy. Capable of charge balancing cell banks in series. Cell manufacturing and performance uniformity is excellent with both designs. Once a few outliers are removed, LV cells are slightly more uniform than MoliJ cells. If cell balance feature of charger is ever invoked, it will be an indication of a significant degradation issue, not a nominal condition.
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