| 摘要 |
PROBLEM TO BE SOLVED: To reduce the ineffective remaining amount by detecting pressure in a hydrogen tank with high accuracy.SOLUTION: In a fuel gas supply device 100 which supplies fuel gas to a fuel cell stack 1 for generating electric power by the fuel gas and oxidant gas, includes: a fuel tank 2 in which the fuel gas is stored; a fuel gas passage 3 which connects the fuel tank 2 and the fuel cell stack 1; a control valve 4 which is provided in the fuel gas passage 3 and supplies the supply amount of the fuel gas; downstream side pressure estimation means 7 which estimates pressure of the fuel gas on the downstream side than the control valve 4; current detection means 8 which detects a control current of the control valve 4; and a controller 6 having first pressure detection means 6A-6D which detect the pressure of the fuel gas on the upstream side than the control valve 4 based on the control current detected by the current detection means 8 and the pressure on the downstream side estimated by the downstream side pressure estimation means 7. |
