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Glass microfiber separator (referred to as AGM separator)

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[Abstract]:
Structure characteristics of maintenance-free battery: In order to improve the service life of lead storage battery, with its performance
Structure characteristics of maintenance-free battery: In order to improve the service life of lead storage battery, with its performance, the positive grid of the maintenance-free battery is generally made of lead-calcium alloy or low-lying alloy, while the negative grid is made of lead-calcium alloy. .
 
In order to reduce the short circuit of the electrode plate and the falling off of the active material, the separator is mostly made of ultrafine glass fiber cotton, or the positive electrode plate is placed in the bag separator. In order to prevent vertical overflow of oxygen and hydrogen, and to reduce moisture loss and active material shedding, the electrode plate group adopts a compact structure.
 
In order to shorten the length of the coupling strip, reduce the internal resistance, and improve the starting performance of the battery, the internal connection method is adopted between the single-plate plates, and only the positive and negative poles are exposed outside the sealed casing.
 
In order to more effectively avoid moisture loss, a gas collecting chamber for collecting water vapor and sulfuric acid vapor is provided in the upper portion of the casing, and after it is cooled, it becomes a liquid and flows back into the electrolyte.
Glass microfiber separator (AGM) is one of the key materials for valve-regulated lead-acid batteries. With the development of valve-regulated sealed lead acid (VRLA) battery production technology for lean liquid design, and technical workers for VRLA battery The continuous exploration of shortcomings and its continuous improvement and improvement, VRLA batteries are increasingly applied to various fields of the world.
 
Although VRLA batteries have higher mass-to-volume ratio energy than Cd-Ni, MH-Ni, Li-ion, Li-polymer batteries, etc., their performance and price ratio still have great advantages, especially As a backup power supply and other application areas, such as communication systems, power systems, railway systems, radio and television systems. At present, due to the large capacity of VRLA battery, high current discharge performance, no memory effect, and low price, its sales still rank first in chemical power products. Nowadays, lead-acid batteries are increasingly used as power sources for electric bicycles, electric scooters and electric motorcycles in the world. A separator having a third electrode of a battery is particularly important for a VRLA battery.
 
Since the glass microfiber separator (AGM) has a large specific surface area, the hydrogen and oxygen generated by the battery reaction re-synthesize water on the separator, so that the water of the battery can be substantially not lost, and it is unnecessary to add water. Also known as maintenance-free, a small amount of hydrogen and oxygen produced without reforming the synthetic water is removed through the valve when a certain pressure is reached.
 
Lead-acid batteries have been around for centuries since their inception, and since they are the cheapest batteries available today, they have been used extensively in a variety of applications. Due to the need of use, its maintenance-free has also become a requirement. Therefore, the development of colloidal battery technology and valve-regulated (sealed) lead-acid battery technology, due to the relatively simple technology of valve-regulated (sealed) lead-acid batteries, the development is very rapid, the need for glass microfiber separator (AGM) is rapidly increasing Due to the increased use of batteries produced, the requirements for glass microfiber separators (AGM) have also diversified.
Then some raw materials, such as AGM, have a large gap between the actual level at home and abroad. The content and elasticity of harmful impurities in domestic AGM are not as good as those in foreign countries. Therefore, there are still inconsistencies between the actual level and the domestic and international levels. In addition, we only compare the product performance levels. , a high-level product, but also have high-level craft equipment and other guarantees, the domestic gap is still large