Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1285494 | Journal of Power Sources | 2008 | 6 Pages |
Abstract
‘HAYABUSA’ is a Japanese inter-planetary spacecraft built for the exploration of an asteroid named ‘ITOKAWA.’ The spacecraft is powered by a 13.2 Ah lithium-ion secondary battery. To realize maximum performance of the battery for long flight operation, the state-of-charge (SOC) of the battery was maintained at ca. 65% during storage, in case it is required for a loss of attitude control. The capacity of the battery was measured during flight operations. Along with the operation in orbit, a ground-test battery was discharged, and both results showed a good agreement. This result confirmed that the performance of the lithium-ion secondary battery stored under micro-gravity conditions is predictable using a ground-test battery.
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Authors
Yoshitsugu Sone, Hiroki Ooto, Masahiro Yamamoto, Takashi Eguro, Shigeru Sakai, Teiji Yoshida, Keiji Takahashi, Masatoshi Uno, Kazuyuki Hirose, Michio Tajima, Jun’ichiro Kawaguchi,