company news about What is Pure lead battery ?

Pure lead batteries were first successfully developed by Gates, a subsidiary of the American Enos Battery Group, in 1973. Through nearly 50 years of continuous research and development, the manufacturing technology of pure lead batteries has also made significant progress. From the aspects of electrochemical performance, structural design, battery materials (including shell materials), manufacturing process and control of batteries, pure lead batteries all reflect the extremely high level of lead-acid batteries.

The so-called pure lead battery refers to the positive and negative electrode grids of the battery (grids are the collecting skeleton of the electrodes, which conduct, collect and distribute current evenly, and are the carrier of the active substance) and the active substance are both made of high-purity lead (99.999%). The battery is manufactured through special processes such as continuous casting and continuous punching.

Compared to ordinary lead-acid batteries, pure lead batteries have four major advantages. Firstly, pure lead batteries have a wide temperature range (-40 ℃ to+80 ℃) and are particularly suitable for extremely harsh environments; Secondly, due to the ultra-thin plate of pure lead batteries (about 1mm, compared to traditional batteries with a plate thickness of about 3mm), more plates can be loaded into the same size shell, greatly increasing the internal reaction area of the battery, thereby improving the chemical reaction efficiency of the battery and reducing the internal resistance of the battery, resulting in higher energy density.

Once again, pure lead batteries have a fast charging acceptance ability, with a battery capacity of over 90% after 3 hours of charging (typically 8-10 hours for GEL gel batteries); Finally, due to the ultra-thin multi-pole design of pure lead batteries, their discharge capacity in short periods of time (such as the 30 minute to 2 hour discharge demand in the urban rail transit industry) is about 40% higher than that of traditional lead-acid batteries.

In addition, the corrosion rate of pure lead grids in pure lead batteries is only about 1/6 of that of conventional gravity cast lead calcium alloy grids, resulting in better corrosion resistance. At the same time, due to less impurities inside the battery, low water loss rate, small self-discharge, and monthly self-discharge rate of less than 2%, the battery has a long storage life, and does not need recharging for up to two years.