Importance

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Abstract

A fuel cell battery (2) has a structure in which a plurality of cells are stacked and in-series connected. The cells include a cell (15), and one or more cells (16) of a cell stack (11). Hydrogen that has entered the fuel cell battery (2) from a channel (12) is supplied to each cell through a supply manifold (13). After the amount of hydrogen needed for power generation is consumed, gas is discharged as a fuel off-gas into a discharge manifold (14), and then flows into the cell (15). This prevents impurities contained in the fuel off-gas from being accumulated in the cells (16), and causes the impurities to be accumulated in the cell (15). Thus, variations in the amount of power generation among the cells can be restrained in a fuel cell battery system that employs a dead-end method.

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First Claim