국내 최대 기계 및 로봇 연구정보

기술보고서

기술보고서 게시판 내용
타이틀	Report on Lithium Ion Battery Trade Studies to Support the Exploration Technology Development Program (ETDP) Energy Storage Project
저자	Green, Robert D.;; Kissock, Barbara I.;; Bennett, William R.
Keyword	ALTAIR LUNAR LANDER;; ASCENT;; ENERGY STORAGE;; LITHIUM BATTERIES;; LOSSES;; OPERATING TEMPERATURE;; SUPPORT SYSTEMS;; TEMPERATURE CONTROL
URL	http://hdl.handle.net/2060/20100042408
보고서번호	NASA/TM-2010-216923
발행년도	2010
출처	NTRS (NASA Technical Report Server)
ABSTRACT	This report documents the results of two system related analyses to support the Exploration Technology Development Program (ETDP) Energy Storage Project. The first study documents a trade study to determine the optimum Li-ion battery cell capacity for the ascent stage battery for the Altair lunar lander being developed under the Constellation Systems program. The battery cell capacity for the Ultra High Energy (UHE) Li-ion battery initially chosen as the target for development was 35 A-hr;; this study concludes that a 19.4 A-hr cell capacity would be more optimum from a minimum battery mass perspective. The second study in this report is an assessment of available low temperature Li-ion battery cell performance data to determine whether lowering the operating temperature range of the Li-ion battery, in a rover application, could save overall system mass by eliminating thermal control system mass normally needed to maintain battery temperature within a tighter temperature limit than electronics or other less temperature sensitive components. The preliminary assessment for this second study indicates that the reduction in the thermal control system mass is negated by an increase in battery mass to compensate for the loss in battery capacity due to lower temperature operating conditions.