Anti-short-circuit AGM partition plate

Abstract

The invention discloses an anti-short-circuit AGM partition plate. The anti-short-circuit AGM partition plate is prepared from, by mass, 3%-5% of modified nano-vermiculite powder, 3%-5% of polyoxyethylene, 5%-10% of modified bamboo fibers, 10%-15% of water-soluble polyvinyl alcohol fibers, 5%-10% of polyimide fibers, 30%-35% of high-alkali glass fibers with the diameter ranging from 0.5 micrometer to 0.7 micrometer and the balance high-alkali glass fibers with the diameter ranging from 3 micrometers to 4 micrometers. According to the anti-short-circuit AGM partition plate, a traditional pure glass fiber formula is abandoned, the plate is creatively woven by multiple fibers in a blending mode, the modified bamboo fibers and the polyimide fibers are creatively added especially, the components such as the nano-vermiculite powder and polyoxyethylene are added to serve as auxiliary materials, therefore, the partition plate is high in porosity and uniform in pore, the comprehensive performance is excellent, and the condition that positive electrode lead powder penetrates through the partition plate to a negative electrode to cause a short circuit can be effectively avoided.

Description

technical field [0001] The invention relates to an AGM separator, in particular to an anti-short circuit AGM separator. Background technique [0002] Glass microfiber separator (AGM) is one of the key materials of valve-regulated lead-acid batteries. The main functions of AGM separators for valve-regulated lead-acid batteries are: (1) to prevent positive / negative plates from contacting each other and causing internal damage to the battery. short circuit; (2) make the battery tightly assembled and reduce the battery volume; (3) prevent the plate from being deformed, bent and active material from falling off; (4) store a necessary amount of electrolyte in the porous separator between the plates to To ensure high conductivity and the need for battery reaction; (5) to prevent some substances harmful to the battery from migrating and diffusing through the separator. Therefore, the AGM separator is called the third electrode of the valve-regulated lead-acid battery. [0003] At ...

AI Technical Summary

Problems solved by technology

[0005] The present invention aims to solve the problem that the AGM separators in the prior art easily cause short circuit caused by fine lead powder on the pole plate penetrating into the separators, and provides a scientific and reasonable formula with high porosity, uniform voids, excellent comprehensive performance, and Anti-short circuit AGM separator to effectively avoid battery short circuit