리튬 이차전지의 양극 활물질 종류에 따른 에너지밀도 및 열폭주 전파 분석에 대한 수치해석적 연구

Abstract

While there are voices of concern from various points about theseriousness of recent climate change and ecosystem damage, a global crisiscaused by Corona 19 is intertwined, and a change of perception is takingplace in the existing industries. Developed countries have been orientedtoward carbon neutrality (Net-Zero), which is spreading various green energyon the wave of the 4th industrial revolution.As a part of the new energy business, research to convergence of newenergy sources is continuously being attempted, while medium and large-sizebattery devices developing, interest in energy storage devices is rapidlyincreasing. In Korea, the Korean version of the Green New Deal is also beingpromoted, selecting green mobility as one of the key factors and spurring thespread, which is directly connected to the spread of lithium-ion batteries.In this study, the NCM battery and LFP battery in the same battery packspace of T company's electric vehicle model A are configured optimally using3D Modeling, and the energy density calculation according to the quantity isnumerically analyzed. In addition, by using a fluid analysis program, athermal runaway simulation for each battery cell and module unit wasconducted, and data on stability were secured to predict future R&Ddirections in the Li-Ion battery industry.When comparing the energy density of the NCM811(21700) battery andthe LFP (3.2V, 120Ah) battery on the same platform of T company's electricvehicle model A, the efficiency of the NCM811 battery was predicted to bearound 24% high.