Nevertheless, positive grid corrosion is probably still the most frequent, general cause of lead–acid battery failure, especially in prominent applications, such as for instance in automotive (SLI) batteries and in stand-by batteries. Pictures, as shown in Fig. 1 taken during post-mortem inspection, are familiar to every battery technician.
Effective repair of the battery can maximize the utilization of the battery and reduce the waste of resources. At the same time, when using lead-acid batteries, we should master the correct use methods and skills to avoid failure caused by misoperation.
Reasons for repairable failure Improper maintenance during use. After running for a period of time, the individual battery will be breakdown or failure. If not maintained properly, a single failed battery will affect the normal use of other cells 错误!未找到引用源。 Overcharge and float charge.
Irreversible formation of lead sulfate in the active mass (crystallization, sulfation) The phenomenon called “sulfation” (or “sulfatation”) has plagued battery engineers for many years, and is still a major cause of failure of lead–acid batteries.
On the other hand, at very high acid concentrations, service life also decreases, in particular due to higher rates of self-discharge, due to gas evolution, and increased danger of sulfation of the active material. 1. Introduction The lead–acid battery is an old system, and its aging processes have been thoroughly investigated.
The crystallized lead sulfate not only does not participate in the reaction, but also adsorbs on the surface of the electrode plate, which increases the internal resistance of the battery and affects the charge and discharge performance of the battery and the battery capacity3.