Materials for positive and negative plates of dry-charged car batteries

Dry-charged car batteries are often overcharged, even if the charging current is not large, but the electrolyte "boils" for a long time, in addition to the fine particles on the surface of the active material are easy to fall off, it will also over-oxidize the grid, causing the active material and the grid to loosely peel off . Due to the different materials of the positive and negative plates of dry-charged automobile batteries, in addition to the active substances, the negative plate is also added with materials such as barium sulfate, humic acid, carbon black and rosin to prevent the shrinkage and oxidation of the negative plate. 

In addition, the number of negative plates of each single-cell dry-charged car battery is always one more than the number of positive plates, and the negative plates are slightly thinner than the positive plates. When the initial charge or supplementary charge of a dry-charged car battery, if the polarity is not paid attention, the dry-charged car battery will be reversed, and the positive and negative electrodes will almost become coarse-grained PbSO4, causing the dry-charged car battery charge capacity Insufficient, can not work properly, or even lead to the scrapping of dry-charged car batteries.