A point-pressed glass fiber separator capable of absorbing and adsorbing electrolyte and its preparation process

Abstract

The invention relates to a point pressure type glass fiber partition plate with capabilities of absorbing and adsorbing electrolyte and a production process thereof. A glass fiber cotton material used for producing the partition plate is rolled and formed between two rolling wheels; segment-shaped bulges which are uniformly distributed are formed on a rolling surface of one rolling wheel or the exterior of the rolling wheel is coated with a rolling layer with uniformly-distributed segment-shaped bulges; the pressure and the rolling speed between the two rolling wheels are controlled; the constant-speed rolling is achieved; the surface of one side of the formed glass fiber partition plate is a surface with segment-shaped hollows which are arranged at intervals and are uniformly distributed. Through the adoption of the partition plate provided by the invention, spaces with bulges and hollows which are arranged at intervals are formed in the surface of the partition plate; when the space is used for absorbing and storing the electrolyte, the overall capabilities of adsorbing and absorbing the electrolyte of the partition plate are completely improved, so that the service life of a battery is prolonged.

Description

technical field [0001] The invention relates to a glass fiber separator, in particular to a point-pressing glass fiber separator used for a valve-regulated lead-acid battery and a preparation process thereof. Background technique [0002] A main problem of existing lead-acid batteries, especially valve-regulated lead-acid batteries, is that either the acid absorption capacity of the battery is not enough, or the phenomenon of battery inflation occurs during the cycle discharge process, which ultimately affects the life of the battery. [0003] The separator is a kind of raw material that all kinds of batteries must use. Different types of batteries use different materials and battery separators made by different processes. Almost all valve-regulated maintenance-free lead-acid batteries are made of glass fiber cotton. Made of glass fiber separator. It can be said that the performance of the separator also determines the quality of the battery. The country has formulated cor...

AI Technical Summary

Problems solved by technology

[0002] A major problem with existing lead-acid batteries, especially valve-regulated lead-acid batteries, is that either the acid absorption capacity of the battery is not enough, or the battery is inflated during the cycle discharge process, which will eventually affect the life of the battery.

[0005] (1) Assembling the battery with a glass fiber separator, if the assembly pressure is too high, the acid will not be filled due to the lack of acid absorption and storage capacity of the separator, and the designed amount of acid filling will not be reached

[0006] (2) Assemble the battery with glass fiber separators. If the assembly pressure is small, acid filling is easy. The glass fiber separators can fully absorb the acid, and the glass fibers will shrink after acid filling, so that it is easy to form a An electrolyte layer purely composed of electrolyte, thus destroying the tight assembly of the battery, destroying the transfer channel of oxygen from the positive electrode to the negative electrode, reducing the efficiency of the gas recombination reaction of the battery, and the battery will produce a large amount of gas

In order to achieve this goal, researchers usually focus on the formula and ratio of glass fiber separators, and have few other ideas

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