Influence Of Working Principle On Battery Life Of Electric Vehicle

The process of charging and discharging lead-acid batteries is an electrochemical reaction process. When charging, lead sulfate forms lead oxide, and when discharging, lead oxide is reduced to lead sulfate. Lead sulfate is a very easy to crystallize substance. When the concentration of lead sulfate in the electrolytic solution in the battery is too high or the static idle time is too long, it will "hold" into a group and form small crystals. These small crystals attract the surrounding environment. The lead sulfate forms large inert crystals like a snowball. When the crystallized lead sulfate is charged, not only can it not be reduced to lead oxide, but also precipitate and adhere to the electrode plate, resulting in a decrease in the working area of the electrode plate. This phenomenon is called Vulcanization, also known as aging. At this time, the battery capacity will gradually decrease until it can no longer be used.