KSLV-I 상단부 고전압 부하용 TVC 배터리 개발

This paper gives a brief summary of the TVC battery design description, specifications and test results. The TVC battery for KSLV-Ⅰ upper stage contains 168 Sony 18650VT high power lithium-ion cells. It configured as 2 strings in parallel, with each string containing 84 series connected cells. This allows to meet nominal 270V voltage and capacity requirements specified for the mission of the Thrust Vector Control(TVC) system. The loads profile of the TVC system has short duration, high current pulse. To power such a system with minimal mass, the battery employed 18650VT Cells. This cell is specifically designed for high rate applications and is capable of a 10C continuous discharge.