A kind of lead-acid storage battery and preparation method thereof

Abstract

The invention discloses a lead-acid storage battery and a preparation method thereof, which comprises a positive plate and a negative plate. The coating of the negative plate of the lead-acid battery comprises the following raw material components in parts by weight: 1000 parts of lead powder, polyasparagus 1~20 parts of acid or polyaspartate, 2~50 parts of silicon dioxide, 2~10 parts of barium sulfate, 4~20 parts of expansion agent, 80 parts of acid, 10 parts of mixed carbon, 106 parts of deionized water , the present invention effectively delays the battery failure caused by the sulfation of the negative electrode, and controls the hydrogen evolution of the negative electrode caused by the addition of a large amount of carbon, so as to achieve the purpose of improving the capacity and cycle life of the lead-acid battery, and can increase the carbon content of the negative electrode of the battery to a certain extent.

Description

Technical field [0001] The invention relates to a battery, in particular to a lead-acid battery and a preparation method thereof. Background technique [0002] The plates of lead-acid batteries are divided into positive and negative. In order to improve the performance of the positive and negative plates of lead-acid batteries, it is necessary to add positive and negative additives respectively when manufacturing the positive and negative plates. Generally speaking, the positive plate additives are relatively single. The additives of the negative plate are more complicated, including expansion agents, corrosion inhibitors and hydrogen evolution inhibitors. For example, commonly used expansion agents can be divided into inorganic expansion agents and organic expansion agents. Inorganic expansion agents include barium sulfate, carbon black, strontium sulfate, etc., which are beneficial to the diffusion of electrolyte in the battery and the deep discharge of the battery; at the same...

AI Technical Summary

Problems solved by technology

[0006] The Chinese patent "Lead-Acid Battery Electrolyte and Preparation Method" with application number 201310668012.7 discloses a lead-acid battery electrolyte and a preparation method. ~2g, 1~2g sodium tetraborate, 0.1~0.5g stannous sulfate, 32~36g sulfuric acid and 58~65g pure water. The refinement of lead sulfate particles generated during the process, but because it is added to the electrolyte, sodium polyaspartate does not participate in the reaction process during the paste process, and the sulfuric acid generated during the paste process cannot be refined Lead particles, so it does not play a role in the conversion of lead sulfate into active substances during the chemical formation process

In addition, there is another disadvantage when adding it to the electrolyte, because sodium polyaspartate prevents or delays the formation of lead sulfate, which is not conducive to the discharge process, that is, the discharge capacity is low