Hydrogen station and operating method for hydrogen station

A hydrogen station, comprising:

• a booster unit that boosts hydrogen;
• a pressure accumulator unit that accumulates the hydrogen boosted by the booster unit;
• and
• a supply unit that supplies the hydrogen accumulated in the pressure accumulator unit to a target to be filled, wherein:
• the pressure accumulator unit includes at least three pressure accumulator tanks including:
• a first accumulator tank configured to accumulate the hydrogen in a first accumulation pressure range;
• a second accumulator tank configured to accumulate the hydrogen in a second accumulation pressure range lower than the first accumulation pressure range;
• and
• a third accumulator tank configured to accumulate the hydrogen in a third accumulation pressure range lower than the second accumulation pressure range,
• the hydrogen station further comprises a pressure accumulator unit controller that performs control such that:
• when supplying the hydrogen from the supply unit to a first target to be filled, the second pressure accumulator tank initially supplies the hydrogen in the second accumulation pressure range;
• the first pressure accumulator tank secondly supplies the hydrogen in the first accumulation pressure range when the second pressure accumulator tank reaches the third pressure accumulation pressure range, and continues supplying the hydrogen until the first pressure accumulator tank reaches the second accumulation pressure range;
• and the third pressure accumulator tank accumulates the hydrogen boosted by the booster unit to the first accumulation pressure range;
• and
• when supplying the hydrogen from the supply unit to a next target to be filled, the first pressure accumulator tank initially supplies the hydrogen in the second accumulation pressure range;
• the third pressure accumulator tank secondly supplies the hydrogen in the first accumulation pressure range when the first pressure accumulator tank reaches the third pressure accumulation pressure range, and continues supplying the hydrogen until the third pressure accumulator tank reaches the second accumulation pressure range;
• and the second pressure accumulator tank accumulates the hydrogen boosted by the booster unit to the first accumulation pressure range, and
• the hydrogen station further comprises an assist controller that performs control such that a compressor unit configured to compress hydrogen supplies the hydrogen simultaneously while the pressure accumulator unit supplies the hydrogen to the supply unit.