(US5229224-A)      The fuel cell generator includes a number of tubular fuel cell units, each including a tubular solid electrolyte partition having ion conductivity. A fuel electrode is provided on one of an inner or outer peripheral surface of the electrolyte partition and an air electrode is provided on the other one of an inner or outer peripheral surface of the partition. The generator also has a conductive fuel gas and conductive oxidising gas supply tubes, at least one of which is arranged in an inner space of the solid electrolyte partition.    Multipoint contact current collectors are in contact with electrode surfaces of the fuel electrode and the air electrode almost over their entire surface, respectively, and electrically connect the conductive fuel gas supply tube and the fuel electrode or the conductive oxidised gas supply tube and the air electrode.    ADVANTAGE -   Offsets thermal stress and improves electricity generating efficiency by reducing internal voltage loss. Stable, long life cell, causing low environmental pollution.    (JP2790666-B2)      The generator includes a tubular solid electrolyte partition (9) having ion conductivity. A fuel electrode (8) is provided on the inner or the outer peripheral surface of the electrolyte partition. An air electrode (10) is provided on the electrolyte partition at the opposite side of the fuel electrode. A conductive fuel gas supply tube (3) and a conductive oxidising gas supply tube (2) are provided such that at least one of these tubes is arranged in an inner space of the electrolyte partition.    Multipoint contact current collectors (5) make contact with electrode surfaces of the fuel electrode and the air electrode all over the surface, respectively. These collectors electrically connect between the conductive fuel gas supply tube and the fuel electrode or between the conductive oxidised gas supply tube and the air electrode.    ADVANTAGE -   Prevents output resistance loss caused by current flow in fuel and air electrodes, for increasing efficiency.