| 摘要 |
PURPOSE:To keep the fastening pressure of a cell constant with a simple unit by stretching constant-load springs between upper and lower end plates of a cell stack to fasten the cell stack. CONSTITUTION:Stainless steel back plates 2 also serving as heater plates, hard insulating materials 3 made of ceramic, and stainless steel end plates 4 are stacked in order on the upper and lower sides of a cell stack 1. Plurality of constant-load springs 5 are stretched between the upper and lower end plates 4, 4 to fasten the cell stack 1 in the upper and lower direction. The constant- load spring 5 is formed by lap-winding belt shaped spring steel 6 around a drum 7, and the axis 7' of the drum 7 is fixed to each end surface ot the lower end plate 4, and the end of the belt-shaped spring steel 6 is fixed with bolts 8 to each end surface of the upper end plate 4. The constant-load springs are mounted with a specified fastening pressure applied to the upper end plate 4, and when the fastening pressure applied is removed after completion of mounting, this fastening pressure is kept by the action of the constant-load springs 5. |
