| 摘要 |
PROBLEM TO BE SOLVED: To provide a hydrogen flow control device of a fuel cell, which makes it possible to keep the minimum necessary hydrogen flow for fuel cell output and reduce hydrogen excessive off-gas. SOLUTION: The hydrogen flow control device of a fuel cell, consists of a charging current estimation part 15 for finding an estimated charging current by inputting the secondary cell charging amount, and based on a data table of the preset charging amount and charging current, a subtracter 16 for finding a motor current detection value subtracting the estimated charging current obtained by the part 15 from a charging current detection value detected from a current detector 14, a compensation current computing part 17 for finding hydrogen flow extra current 22 based on a motor current detection value 21 calculated by the 16, an adding part 18 for adding the 22 to a current detection value detected by the current detector, and a hydrogen flow computing part 19 which inputs the adding value 23 of the part 18 and giving a flow regulating valve 8 a hydrogen flow direction value 24 which is found by the value 23 multiplied with the value given from the hydrogen volume needed by the fuel battery cell 1 at rated output divided by fuel battery rated current value. |
