| 摘要 |
PURPOSE:To improve discharge performance and life performance by using a negative plate in which paste containing larger amount of carbon black than that filled in the upper part is filled in the lower part. CONSTITUTION:A negative plate in which paste containing larger amount of carbon black than that filled in the upper part is filled in the lower part is used. In a battery assembled with this negative plate, the amount of PbSO4 in a negative active material in the upper part after charging in the 10th charge- discharge cycle is 10-30% which is similar to that in a conventional battery, and that in the lower part is 16-21% which is remarkably lower than that in the conventional battery. This means the charging states in the upper part and the lower part are almost equal. The charge-discharge cycles until the discharge capacity lowers to 50% or less of the rated capacity are remarkably increased to 19-22. |
