| 摘要 |
PURPOSE:To smoothly undergo charge-discharge reaction by stacking a clad type positive plate using a lead alloy core and a square tube, a porous separator, and a negative plate so that one side of the square tube is closely brought into contact with the separator to form a plate group, and impregnating electrolyte to the plate group. CONSTITUTION:A plate group in a clad type sealed lead-acid battery is formed in such a way that a positive plate comprising a core 1 made of Pb-Ca-Sn alloy or Pb-Sn-Ag alloy which is not substantially reducing hydrogen overvoltage, a square tube 2 made of glass or polyester fiber, and active material 3 filled in a space between the core 1 and tube 2, and a negative plate 4 comprising lead alloy, and a porous separator 5 comprising glass fiber are stacked so that one side 2' of the tube 2 is closely brought into contact with the separator 5. A specified amount of electrolyte is impregnated in the plate group. The charge-discharge cycle life is lengthened even if lead alloy core is used, and since the amount of electrolyte is limited, loss of water is decreased by closed reaction of oxygen cycle. Therefore, manufacture of maintenance-free battery is made possible. |
