| 摘要 |
PROBLEM TO BE SOLVED: To reduce the manufacturing cost of a pressure accumulator unit, and to improve work efficiency in replenishment of an accumulator with hydrogen.SOLUTION: A pressure accumulator unit 3 can store hydrogen filled in a hydrogen fuel tank 5. The pressure accumulator unit 3 includes a low pressure bank 31 which includes one or more accumulators 311 capable of storing hydrogen and can fill hydrogen in the hydrogen fuel tank 5 when an internal pressure Pof the hydrogen fuel tank 5 is in a low pressure state, and a high pressure bank 33 which includes one or more of the accumulators 331 capable of storing hydrogen and can fill hydrogen in the hydrogen fuel tank 5 when the internal pressure Pof the hydrogen fuel tank 5 is in a high pressure state higher than the low pressure state. The volume of the accumulator 331 is smaller than that of the accumulator 311.SELECTED DRAWING: Figure 9 |
