Jae Yong Lee, Hye Jung Cho, Young-Jae Kim, Hu Lei, Young Soo Joung, US Patent: US8691455
To provide a fuel battery system and a fuel battery operation method using it. The fuel battery system for supplying power to a load is provided with a fuel battery equipped with at least one unit cell, an open/close switch with its one end and the other end connected to different electrodes of the fuel battery, and a circuit part controlling a switch operation, and the fuel battery operation method uses the above. The fuel battery is provided with a plurality of unit cells connected in series, an end of the switch being connected to an anode of the first unit cell of the plurality of unit cells, and the other end being connected to a cathode of the last unit cell. Further, a converter, a secondary battery, a battery charging apparatus and a switching means are provided between the load and the fuel battery.
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