International Space Station Lithium-Ion Battery Status

Dalton, Penni J ; Bowens, Ebony ; North, Tim ; Balcer, Sonia

关键词: LITHIUM BATTERIES;    METAL IONS;    ELECTRIC BATTERIES;    LIFE (DURABILITY);    ORBITAL SERVICING;    REPLACING;    THERMAL CYCLING TESTS;    HIGH TEMPERATURE TESTS;    THERMAL INSTABILITY;    AEROSPACE SAFETY;    SPACECRAFT MAINTENANCE;    SPACE DEBRIS;    INTERNATIONAL SPACE STATION;   

RP-ID  :  GRC-E-DAA-TN62975

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来源: NASA Technical Reports Server

【 摘 要 】

When originally launched, the International Space Station (ISS) primary Electric Power System (EPS) used Nickel-Hydrogen (Ni-H2) batteries to store electrical energy. The electricity for the space station is generated by its solar arrays, which charge batteries during insolation for subsequent discharge during eclipse. The Ni-H2 batteries were designed to operate for ten years at a 35 percent depth of discharge (DOD) maximum during normal operation in a Low Earth Orbit. For service beyond that period, upgraded Li-Ion Orbital Replacement Units (ORUs) were designed. These are the largest Li-Ion batteries ever utilized for a human rated spacecraft. With the oldest 12 Ni-H2 battery ORUs cycling since September 2006, the first set of six was replaced by Li-Ion batteries in December 2016; the second set of six is planned for replacement in September 2018. This paper will include an overview of the ISS Li-Ion battery system architecture, on-orbit status of the first 6 batteries, start up of the second 6 batteries, and the status of the Li-Ion cell and ORU life cycle testing.