Chemical Characters of VRLA Gel Battery
Compared with the traditional lead-acid battery, gel battery with stable performance, wide application and advantages of long life, the sun in 1957, the German company developed gel batteries and access to global patents. Domestic research gel batteries from 50′s, to 80-90 years to reach orgasm, but due to factors such as technology transfer restrictions, the domestic can really master the core technology of few, and it is difficult to achieve the best theoretical performance gel battery status.
VRLA Gel battery is based on true gel technology which has more than half century experience. This type of batteries has gel electrolyte usually produced by the homogeneous distributed silicon dioxide in a diluted sulfuric acid named as gel SOL with thixotropic properties. The special designed vent valves are also used to control the gassing and water losing rate. Since no maintenance is required and valve regulated, they are classified as one type of VRLA battery (The other type is VRLA-AGM batteries)
Gel is usually produced by homogeneous dispersion of pyrogenic silica in a diluted sulfuric acid. Pyrogenic silica is a powder of very fine dispersed silicon dioxide which can absorb more than 10 times of its weight liquids, producing gel. Because of the thixotropic properties of gel (liquid by stirring and solid by resting), after a certain gelling time, the agglomerates are connecting themselves together to form a network which keeps the liquid inside and gives the gel structure, This form can be broken by stirring to single agglomerates giving again a liquid form.
Gel batteries have a few strong advantages that keep them on the market. They don’t typically leak, or produce spills or corrosion. Even if they are cut open, the gel does not flow out of the battery. The batteries are not known to evaporate, which is a constant issue with traditional wet batteries. They have a better resistance to extreme temperature changes, and are more vibration-resistant and shock-resistant than other types of batteries.
If you want to know more about gel battery, you can visit LEOCH International, which is a professional battery manufacturer of lead acid battery. The site is http://www.leoch.com
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