Patent ID: 8757223

Claim:
A hydrogen filling apparatus for filling a hydrogen tank with hydrogen, the hydrogen filling apparatus comprising: a filling controller configured to, after the hydrogen tank has started to be filled with hydrogen in a hydrogen filling process, stop the hydrogen filling process for a predetermined time, before the hydrogen tank is filled up to a predetermined amount, wherein a sensor detects a temperature and a pressure in the hydrogen tank while the hydrogen filling process is stopped; a control device configured to calculate a timed needed to fill the hydrogen tank with the predetermined amount of hydrogen based on detected values of the temperature and the pressure; and a display unit configured to display the time, wherein the hydrogen filling process includes an initial filling stage before the hydrogen filling process is stopped for the predetermined time and a normal filling stage in which the hydrogen filling process is resumed after the temperature and the pressure are detected while the hydrogen filling process is being stopped, and wherein the initial filing stage is shorter in duration than the normal filling stage.