| 摘要 |
1285413 Storage batteries YUASA BATTERY CO Ltd 30 Sept 1970 [24 April 1970] 46523/70 Heading HlB A method of making a dry storage battery in which a powder composition of a mixture of a thermoplastic synthetic resin and hydrated silica gel is disposed around an electrode plate group, is heated in saturated steam at a temperature of over 100‹ C. to melt the resin and then allowed to solidify to form a liquid absorbable porous body integral with the plate group, said body being impregnated with electrolyte. The powder composition may be disposed around the plate group whilst the latter is positioned in a mould having the same dimensions as the battery casing, the porous body integral with the plate group being subsequently removed from the mould and placed in the casing, Figs. 1-4, not shown. Prior to placing the integral porous body and plate group in the casing it may be covered by a bag of heat-shrinkable synthetic resin, Fig. 6 (not shown), to prevent electrolyte leakage. In another method, the mould is not used and the powder composition is disposed around the plate group whilst the latter is positioned in the battery casing. The electrodes forming the plate group may be spaced by plate or U-shaped separators or the spaces may be filled by the powder composition. The drawings show a lead/acid battery but the method may also be applied to an alkaline battery. The description includes a table listing different synthetic resins which are suitable together with different proportions by weight of the resin and silica gel powders. |
