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title科学衛星PLANET-Cリチウムイオン電池の開発(その2)
Other TitleDevelopment of lithium-ion battery for the Venus climate orbiter "PLANET-C": Second report
Author(jpn)大平, 賢治; 大登, 裕樹; 山本, 真裕; 井奈福, 浩之; 豊田, 裕之; 鵜野, 将年; 廣瀬, 和之; 田島, 道夫
Author(eng)Ohira, Kenji; Ooto, Hiroki; Yamamoto, Masahiro; Inafuku, Hiroyuki; Toyota, Hiroyuki; Uno, Masatoshi; Hirose, Kazuyuki; Tajima, Michio
Author Affiliation(jpn)古河電池; 古河電池; 古河電池; 古河電池; 宇宙航空研究開発機構宇宙科学研究本部; 宇宙航空研究開発機構宇宙科学研究本部; 宇宙航空研究開発機構宇宙科学研究本部; 宇宙航空研究開発機構宇宙科学研究本部
Author Affiliation(eng)Furukawa Battery; Furukawa Battery; Furukawa Battery; Furukawa Battery; Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA)(ISAS); Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA)(ISAS); Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA)(ISAS); Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA)(ISAS)
Issue Date2009-06
PublisherInstitute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA)
宇宙航空研究開発機構宇宙科学研究本部
Publication titleSpace Energy Symposium
宇宙エネルギーシンポジウム
Volume28
Publication date2009-06
Languagejpn
eng
AbstractIn recent years, lithium-ion batteries having high discharge voltage and high energy density have been studied in many countries including Japan, the United States, and France for use as power supplies for spacecrafts. A lithium-ion cell having rated capacity of 13.2 Ah - developed for use in a spacecraft by The Furukawa Battery Co. Ltd. and the first of its kind in the world - is onboard "HAYABUSA", a planet exploration spacecraft developed by the Japan Aerospace Exploration Agency (JAXA) launched in May 2003. It is returning to the earth after touching down on the asteroid "ITOKAWA" to get samples from the surface. Based on fundamental technologies used in the battery cells for "HAYABUSA" and for preparation for mounting on the "PLANET-C" Venus probe scheduled for launch in spring 2010, we modified various performance parameters and developed a revised 23.5 Ah class lithium-ion cell. We produced a prototype model cell with space specifications and performed assessment of adaptability of performance of the cell to the "PLANET-C" mission, assessment of durability in mechanical environments, and of safety. Assessment testing of adaptability to the mission is a test in which actual operating conditions of "PLANET-C" are simulated for assessment of storage from completion of the cell until launching of the satellite, floating charge characteristics from launching of the satellite to arrival to Venus, and charging/discharging cycle characteristics from arrival of the probe to Venus to the mission end. Evaluation of durability in mechanical environments consists of random vibration testing, sinusoidal wave vibration testing, and pyrotechnic shock testing. Through these assessments, we surveyed whether the developed cell's structure can sufficiently withstand vibrations and impacts occurring during launching of "PLANET-C". Furthermore, we performed overcharge testing and external short-circuit testing as safety assessment tests. Assessment of its adaptability to its mission is continuing: all cells subjected to testing have exhibited good progression. Results of assessments of durability in mechanical environments have revealed no failure or abnormal heat generation of the cell in any test. No cell abnormality such as a sudden drop of cell voltage has occurred. Safety assessments have confirmed that fracture, ignition, actuation of the pressure relief valve and a sudden temperature rise did not occur in either the overcharge test or the external short-circuit test.
Description会議情報: 第28回宇宙エネルギーシンポジウム(2009年3月9日, 宇宙航空研究開発機構宇宙科学研究本部相模原キャンパス)
Meeting Information: The twenty-eight Space Energy Symposium (March 9, 2009. Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, Sagamihara)
Document TypeConference Paper
JAXA Categoryシンポジウム・研究会
NCIDAN10324356
SHI-NOAA0064295001
URIhttps://repository.exst.jaxa.jp/dspace/handle/a-is/18305


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