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1991NASAAerospaceBatteryWorkshop -326- Nickel-Cadmium Technologies Session

RESULTS OF DEEP DOD LIFECYCLE TESTS AT HIGH RATES

o_ ON 12Ah NiCd CELLS

JHU/APL spacecraft program -JANUS MISSION II=_ 2 year Low Earth Orbit (LEO) mission=_ Size and weight critical

Electrical Power System (EPS)Solar array

=_ Nickel cadmium (NiCd) batteryBattery charge regulator

- Voltage-temperature (V-T)limiting- Shunt excess array current

NiCd Battery

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High discharge rates (1.8C)Deep Depth-of-discharge (DOD)- 1500 cycles @ 70% DOD- 10000 cycles @ 20% DODLittle applicable performance data

:=_ Lifecycle test

1991 NASA Aerospace Battery Workshop -327- Nickel-Cadmium Technologies Session

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N92-22756 - NASA€¦ · Solar array =_ Nickel cadmium (NiCd) battery Battery charge regulator -...

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