| 摘要 |
PURPOSE:To provide a storage battery which shows excellent resistance to vibration by arranging a holding piece at the upper end of electrode plate group and by injection molding of a supporting member integrated to the upper surface of the holding piece and the internal side surface of electrolyzer. CONSTITUTION:An electrode plate group 4 is inserted into an electrolyzer 1 and a holding piece 9 is arranged at the upper end of electrode plate group 4 at a right angle to the electrode plate surface. The fused synthetic resin 13 is injected while the holding piece 9 is held by the bottom force of die 12. The electrode plate group 4 is rigidly fixed through the holding piece 9. As a result, the melt synthetic resin 13 flows up to the inside of electrode plate group 4 during injection molding owing to the effect of holding piece 9, giving no adverse effect on the battery performance. Moreover, since strength of electrolyzer is enhanced by providing the holding piece 9 and supporting member 11, warpage of separator 2 of the electrolyzer 1 can be prevented at the time of heat sealing with the cover and moreover thickness of side wall of electrolyzer can also be reduced. |
