| 摘要 |
The fuel cell battery ( 1 ) has an integrated heat exchanger ( 4 ) which is arranged between a heat insulating jacket ( 12 ) and a stack ( 10 ) of high temperature fuel cells ( 2 ). There is a chamber ( 3 ), preferably at least two chambers for afterburning, between a periphery ( 14 ) of the cell stack and the heat exchanger. The heat exchanger is provided for a heat transfer from an exhaust gas ( 7 ) to a gaseous oxygen carrier ( 5 ). There are arranged on the stack periphery ( 14 ), outside or inside the chamber or chambers respectively, inlet points ( 25 a) for the oxygen carrier, on the one hand, and outlet points ( 25 b , 26 b) for non-converted educts, namely a fuel gas ( 6 ) and the oxygen carrier, on the other hand. The heat exchanger ( 4 ) includes a passage system ( 4 ) through which the exhaust gas ( 7 ) and the oxygen carrier ( 5 ) flow largely in transverse planes disposed perpendicular to the axis of the cell stack ( 10 ) in one operating state of the battery. The exhaust gas can be led off through axially directed collecting passages ( 47 '') which are arranged in a peripheral region of the heat exchange. Parts of the heat exchanger, which are disposed between the peripheral region and the cell stack, form a shield for screening the cell stack from the collecting passages with respect to a thermal influence. |
