| 摘要 |
PURPOSE:To improve sudden discharge performance at low temperatures by using the dilute sulfuric acid in which lignin is contained in an electrolyte. CONSTITUTION:A battery consisting of four positive electrode plates and five negative electrode plates is obtained by manufacturing a substrate by the gravity casting method using a sealed type lead acid storage battery in which the glass fine fiber of less than 1mu in diameter is impregnated with an electrolyte and the electrolyte is non-fluidized and using the lead-0.1%calsium-0.5% tin alloy as the plate substrate and fabricating the positive and negative electrode plates in accordance with the normal method. The dilute sulfuric acid of the specific gravity of 1.320 that dissolved lignin sulfonic acid sodium 0.1%, 0.3%, 0.5%, and 1.0% was added to this battery by 250ml per cell and was left alone at -15 deg.C for 18hr and then was discharged up to the termination voltage of 6V at the current of 150A. As a result, the conventional battery A showed only the discharge capacity of approximately two minutes and ten seconds, while the batteries B, C, D, and E of this invention that injected the dilute sulfuric acid containing lignin increased the discharge capacity. |
