| 摘要 |
981,266. Fuel cells. UNITED AIRCRAFT CORPORATION. Feb. 28, 1963 [Feb. 28, 1962], No. 8046/63. Heading H1B. To prevent the pressure of the electrolyte rising on rise in temperature, one of the pair of electrodes of a fuel cell mounted in a pressurized container comprises a frame connected to the active portion by a flexible diaphragm so that this electrode can move relative to the other when the electrolyte between the electrodes expands. Each of the two fuel cells 14, 16 mounted in pressurized container 2 consists of two hollow electrodes 18, 20 separated by a space 22 filled with electrolyte. Each electrode comprises a porous plate 24 spaced from a non. porous plate 26 except at its periphery wher they are brazed together. Attached, to the lower electrode 20 is an annulus 34 terminating in a rigid ring 36. Attached to the upper electrode is a flexible diaphragm 38 terminating in a rigid ring 40. An insulating seal 42 is placed between the electrodes. The stack of cells is compressed by bolts 48. The annulus 34 of electrode 20 may be replaced by a flexible diaphragm. In order that the cells may function most efficiently the quantity of electrolyte is chosen so that the spacing of the electrodes is less than the optimum value when cold but reaches the optimum value at the working temperature. |
