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지게차용 DMFC와 리튬배터리 하이브리드시스템의 혼합 적용에 대한 연구
주용수(Yong-Soo Ju),임동진(Dong-Jin Lim),김홍건(Hong-Gun Kim),곽이구(Lee-Ku Kwac) 한국기계가공학회 2021 한국기계가공학회지 Vol.20 No.4
This paper explains a DMFC-Lithium Battery hybrid system applied to a forklift. A conventional Lead Acid battery forklift has several problems: long charging times, short operation times, and frequent battery replacements. As a result, hydrogen-powered forklifts are replacing Lead acid battery-powered forklifts due to their shorter refueling time and longer operation times. However, in doing so, we are confronted with the problem of a high hydrogen refueling infrastructure. A Direct Methanol Fuel Cell (DMFC), on the other hand, is an eco-friendly generator that directly converts the chemical energy of methanol into electricity. In general, DMFC is regarded as a small power generator under kW power. In this paper, a DMFC-Battery hybrid system is applied to a 1.5 ton forklift by increasing the power output of the DMFC stack and utilizing the high charge-discharge characteristics of a lithium battery.