The performance of the lithium-ion secondary cells under micro-gravity conditions - in-orbit operation of the interplanetary spacecraft 'HAYABUSA'

Yoshitsugu Sone, Hiroki Ooto, Masaaki Kubota, Masahiro Yamamoto, Hiroyuki Yoshida, Takashi Eguro, Shigeru Sakai, Teiji Yoshida, Masatoshi Uno, Kazuyuki Hirose, Michio Tajima, Ju N.Ichiro Kawaguchi

Research output: Contribution to journalArticlepeer-review

12 Citations (Scopus)

Abstract

'HAYABUSA' is a Japanese interplanetary spacecraft 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 contingency operations. To maintain this SOC condition, the battery is charged once a week. We further charge the battery up to 4.1 V/cell using bypass circuits to balance the cells every four months. The capacity of the battery was measured during the flight operation, which revealed the appropriate capacity for the expected mission.

Original languageEnglish
Pages (from-to)518-522
Number of pages5
JournalElectrochemistry
Volume75
Issue number7
DOIs
Publication statusPublished - 2007 Jul
Externally publishedYes

Keywords

  • Aerospace
  • In-orbit
  • Lithium-ion secondary cell
  • Micro gravity

ASJC Scopus subject areas

  • Electrochemistry

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