ENERGY CONTROL SYSTEM FOR FUEL CELL VEHICLE

摘要

PROBLEM TO BE SOLVED: To provide a fuel cell system capable of suppressing overdischarge and overcharge of a secondary battery even when load power is suddenly varied.

SOLUTION: An electric power adjuster 15 converts output voltage of a secondary battery 12 into fuel cell 10 voltage when output of a fuel cell 10 is insufficient and converts output voltage of the fuel cell 10 into voltage of the secondary battery 12 when output of the fuel cell 10 is excess. When a charge discharge state detector 13 detects the overdischarge or overcharge of the secondary battery 12, a controller 14 changes operation of the electric power adjuster 15 from the output voltage control of the fuel cell 10 to the current control of the secondary battery 12.

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