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http://dx.doi.org/10.5139/JKSAS.2007.35.4.363

Development of Lithium-Ion based Onboard Battery for Space Launch Vehicle  

Kim, Myung-Hwan (한국항공우주연구원 전자팀)
Ma, Keun-Su (한국항공우주연구원 전자팀)
Lim, You-Chol (한국항공우주연구원 전자팀)
Lee, Jae-Deuk (한국항공우주연구원 전자팀)
Publication Information
Journal of the Korean Society for Aeronautical & Space Sciences / v.35, no.4, 2007 , pp. 363-368 More about this Journal
Abstract
Lithium-ion batteries providing high gravimetric energy density are rapidly replacing Ni-Cd and Ni-H2 in aerospace applications. The main advantage is the weight reduction of the battery system. Weight is a major concern in aerospace applications. Also, lithium-ion offer low thermal dissipation, high energy efficiency, and low cell cost. The Onboard battery module for KSLV-I(Korea Space Launch Vehicle) contains 80 Sony US18650 cells configured as 10 strings in parallel, with each string containing 8 series connected cells. This allows to meet voltage and capacity requirements specified for the mission. In this paper design description and specifications of lithium-ion battery developed are presented. Qualification test flow is also shown to make sure the performance in the predicted space environment. Electrical performance was simulated by dedicated program, and verified with electronic load. Lastly, the capacity was proven on real equipment load assembly.
Keywords
Lithium-ion Battery; US18650 Battery Cell; Space Launch Vehicle; Electronic Loads; Qualification Test;
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