Extension system for converting on-site hydrogen charging station

본 발명은 온사이트형 수소충전소 전환용 증설 시스템에 관한 것으로, 보다 상세하게는, 액화수소가 저장된 액화수소탱크; 상기 액화수소탱크에서 증발된 증발가스(Boil OF Gas, BOG)를, 온사이트(On-site)형 수소충전소에 구성되는 압축기의 입력측에 공급하도록 구성된 증발가스공급라인; 및 상기 액화수소탱크에 저장된 액화수소를 일정압력으로 가압하여 기화한 후, 상기 압축기의 출력측에 공급하도록 구성된 수소공급라인;을 포함하는, 온사이트형 수소충전소 전환용 증설 시스템에 관한 것이다. The present invention relates to an extension system for converting an on-site hydrogen fueling station and, more specifically, to an extension system for converting an on-site hydrogen fueling station, the extension system comprising: a liquefied hydrogen tank in which liquefied hydrogen is stored; a boil-off gas supply line which is configured to supply boil-off gas (BOG), evaporated from the liquefied hydrogen tank, to the input side of a compressor constructed in an on-site hydrogen fueling station; and a hydrogen supply line which is configured to vaporize liquefied hydrogen stored in the liquefied hydrogen tank by pressurizing same at a certain pressure, and then supply same to the output side of the compressor.