HYDROGEN FILLING DEVICE AND HYDROGEN FILLING METHOD

PROBLEM TO BE SOLVED: To provide a hydrogen filling device and a hydrogen filling method in which a measurement of pressure at the time of finishing hydrogen gas filling can be carried out and at the same time an error of a measured value from the hydrogen gas filling finish time to the hydrogen gas diffusion finish time can be reduced.SOLUTION: There are provided a hydrogen gas supply passage 12 for supplying hydrogen gas to a container that becomes an object to which hydrogen gas is supplied; a first opening or closing valve 24 arranged at the hydrogen gas supply passage 12; a hydrogen gas diffusion passage 15 branched at a secondary side of the first opening or closing valve 24 at the hydrogen gas supply passage 12; a second opening or closing valve 29 arranged at the hydrogen gas diffusion passage 15; a first pressure gauge 26 and a second pressure gauge 27 arranged at the secondary side of the first opening or closing valve 24 at the hydrogen gas supply passage 12. The first pressure gauge 26 can measure up to the maximum supply pressure of hydrogen gas and the second pressure gauge 27 selects a hydrogen filling device 1 showing a higher accuracy than that of the first pressure gauge 26.SELECTED DRAWING: Figure 1 【課題】水素ガス充填終了時の圧力測定が可能であるとともに、水素ガス充填終了時から水素ガス放散終了時までの測定値の誤差を小さくすることが可能な、水素充填装置及び水素充填方法を提供する。【解決手段】水素ガスの供給対象となる容器に水素ガスを供給する水素ガス供給経路１２と、水素ガス供給経路１２に設けられた第１開閉弁２４と、水素ガス供給経路１２の第１開閉弁２４の二次側で分岐する水素ガス放散経路１５と、水素ガス放散経路１５に設けられた第２開閉弁２９と、水素ガス供給経路１２の第１開閉弁２４の二次側に設けられた第１及び第２圧力計２６，２７と、を備え、第１圧力計２６が水素ガスの最大供給圧力まで測定可能であり、第２圧力計２７が第１圧力計２６よりも精度が高い、水素充填装置１を選択する。【選択図】図１