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title宇宙用大型リチウムイオン電池の長期寿命評価
Other TitleLong term life evaluation for large scale lithium-ion cells for space use
Author(jpn)今村 文隆; 井上 剛文; 吉田 浩明; 駒田 周美
Author(eng)Imamura, Nobutaka; Inoue, Takefumi; Yoshida, Hiroaki; Komada, Kanemi
Author Affiliation(jpn)ジーエス・ユアサテクノロジー 大型リチウムイオン技術部; ジーエス・ユアサテクノロジー 大型リチウムイオン技術部; ジーエス・ユアサテクノロジー 大型リチウムイオン技術部; ジーエス・ユアサテクノロジー 大型リチウムイオン技術部
Author Affiliation(eng)GS Yuasa Technology Ltd. Large-scale Lithium-ion Battery Engineering Department; GS Yuasa Technology Ltd. Large-scale Lithium-ion Battery Engineering Department; GS Yuasa Technology Ltd. Large-scale Lithium-ion Battery Engineering Department; GS Yuasa Technology Ltd. Large-scale Lithium-ion Battery Engineering Department
Issue Date2008-05
PublisherInstitute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA/ISAS)
宇宙航空研究開発機構宇宙科学研究本部
Publication title第27回宇宙エネルギーシンポジウム 平成19年度
The Twenty-seventh Space Energy Symposium
Start page1
End page5
Publication date2008-05
Languagejpn
AbstractGS Yuasa Technology (GYT) had developed large capacity lithium ion cells for space applications in 1999. The chemical design of the cell was fixed at that time and it has not changed up to now. Since satellite applications require very long life and the replacement during missions is impossible, it is very important to evaluate life characteristics of the cell. GYT established a capacity estimation formula under consideration of two major capacity loss mechanisms from matrix life tests. The estimation method makes it possible to estimate cell life in any missions. On the other hand, GYT has performed many life tests which simulate actual satellites missions since the cell development. These tests have reached the end of the required mission shown as follows. (1) 40 seasons (20 years): Semi-accelerated GEO (Geostationary Earth Orbit) (max. 80 percent DOD (Depth Of Discharge) (2) 30 seasons (15 years): Semi-accelerated GEO (max. 70 percent DOD) (3) 40,000 cycles (7 years): LEO (Low Earth Orbit) 25 percent DOD. From these results, GYT confirmed that the cells can meet general requirements of life performance for GEO and LEO.
Keywordslithium ion battery; life; accelerated life test; space technology experiment; geosynchronous orbit; storage battery; spacecraft power supply; electric discharge; リチウムイオン電池; 寿命; 加速寿命試験; 宇宙技術実験; 同期軌道; 蓄電池; 宇宙機給電; 放電
Document TypeConference Paper
JAXA Categoryシンポジウム・研究会
SHI-NOAA0063965001
URIhttps://repository.exst.jaxa.jp/dspace/handle/a-is/40567


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