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Repair method of decommissioned lead-acid battery, repair electrolyte and preparation method of repair electrolyte

A lead-acid battery, electrolyte technology, applied in the direction of lead-acid battery, secondary battery repair/maintenance, electrolyte/reactant regeneration, etc. Capacity decline and other problems, to achieve the effect of enhancing deep cycle performance, improving service life, and promoting dissolution

Active Publication Date: 2021-09-24
河南润祥能源科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

One is the improper use of lead-acid batteries, including dehydration, undercharging, overdischarging, deep discharging and other reasons, so that a layer of coarse-grained lead sulfate is formed on the surface of the negative electrode. Pores hinder electrolyte penetration and current conduction, resulting in a significant drop in battery capacity. At this time, conventional charging cannot restore it to lead dioxide and spongy lead

Method used

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  • Repair method of decommissioned lead-acid battery, repair electrolyte and preparation method of repair electrolyte
  • Repair method of decommissioned lead-acid battery, repair electrolyte and preparation method of repair electrolyte
  • Repair method of decommissioned lead-acid battery, repair electrolyte and preparation method of repair electrolyte

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Embodiment 1

[0023] A kind of decommissioned lead-acid battery repair electrolyte of the present invention comprises the following components, recorded in parts by weight, followed by 0.5 parts of polyvinylpyrrolidone, 2.8 parts of activated carbon fibers, 6.5 parts of sodium silicate, 1.5 parts of nano silicon dioxide, sulfuric acid 4 parts of sodium, 4 parts of zinc sulfate, 3 parts of copper sulfate, 86 parts of ultra-pure distilled water.

[0024] A preparation method for repairing electrolyte of decommissioned lead-acid battery, comprising the following steps:

[0025] (1) To prepare an aqueous solution of polyvinylpyrrolidone, add polyvinylpyrrolidone with a K value (significant average molecular weight) of 30 to ultrapure distilled water, heat to about 40°C, and stir until fully dissolved to obtain an aqueous solution of polyvinylpyrrolidone;

[0026] (2) sodium sulfate, zinc sulfate, copper sulfate, activated carbon fiber, polyvinylpyrrolidone aqueous solution are added to a large ...

Embodiment 2

[0029] A retired lead-acid battery repair electrolyte, comprising the following components, recorded in parts by weight, followed by 1 part of polyvinylpyrrolidone, 3 parts of activated carbon fiber, 7 parts of sodium silicate, 2 parts of nano silicon dioxide, 5 parts of sodium sulfate 5 parts, 5 parts of zinc sulfate, 5 parts of copper sulfate, 70 parts of ultrapure distilled water.

[0030] A preparation method for repairing electrolyte of decommissioned lead-acid battery, comprising the following steps:

[0031] (1) To prepare an aqueous solution of polyvinylpyrrolidone, add polyvinylpyrrolidone with a K value (significant average molecular weight) of 40 to ultrapure distilled water, heat to about 45°C, and stir until fully dissolved to obtain an aqueous solution of polyvinylpyrrolidone;

[0032] (2) sodium sulfate, zinc sulfate, copper sulfate, activated carbon fiber, polyvinylpyrrolidone aqueous solution are added to a large amount of ultrapure distilled water, fully stir...

Embodiment 3

[0035] A retired lead-acid battery repair electrolyte, comprising the following components, recorded in parts by weight, followed by 1.2 parts of polyvinylpyrrolidone, 3.8 parts of activated carbon fiber, 9.5 parts of sodium silicate, 2.5 parts of nano silicon dioxide, 6.5 parts of sodium sulfate 6.5 parts of zinc sulfate, 4 parts of copper sulfate, 80 parts of ultrapure distilled water.

[0036] A preparation method for repairing electrolyte of decommissioned lead-acid battery, comprising the following steps:

[0037] (1) To prepare an aqueous solution of polyvinylpyrrolidone, add polyvinylpyrrolidone with a K value (significant average molecular weight) of 60 to ultrapure distilled water, heat to about 50°C, and stir until fully dissolved to obtain an aqueous solution of polyvinylpyrrolidone;

[0038] (2) sodium sulfate, zinc sulfate, copper sulfate, activated carbon fiber, polyvinylpyrrolidone aqueous solution are added to a large amount of ultrapure distilled water, fully ...

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Abstract

The invention discloses a repair method of a decommissioned lead-acid battery, a repair electrolyte and a preparation method of the repair electrolyte, and relates to the field of repair of lead-acid batteries. The invention aims to provide a method for preparing a lead-acid battery, which can effectively promote the dissolution of non-conductive coarse-grain lead sulfate, revive the decommissioned battery, enhance the deep cycle performance of the decommissioned lead-acid battery, prolong the service life of the decommissioned lead-acid battery and prolong the service life of the decommissioned lead-acid battery. According to the repair method, the repair electrolyte and the preparation method of the repair electrolyte, the heat resistance is improved so as to adapt to different working conditions in echelon utilization of the decommissioned lead-acid battery. The repair electrolyte for the decommissioned lead-acid battery is prepared from the following components in parts by mass: 0.5 to 1.2 parts of polyvinylpyrrolidone, 2.8 to 3.8 parts of active carbon fiber, 6.5 to 9.5 parts of sodium silicate, 1.5 to 2.5 parts of nano silicon dioxide, 4 to 7 parts of sodium sulfate, 4 to 6.5 parts of zinc sulfate, 3 to 5 parts of copper sulfate and 70 to 86 parts of ultrapure distilled water. According to the repair method of the decommissioned lead-acid battery, the repair electrolyte for the decommissioned lead-acid battery is adopted for repair.

Description

technical field [0001] The invention relates to the technical field of lead-acid battery repair, in particular to a repair method for a decommissioned lead-acid battery, a repair electrolyte and a preparation method thereof. Background technique [0002] Since the Frenchman Plante invented lead-acid batteries in 1859, lead-acid batteries have experienced 160 years of rapid development and have been widely used in various fields including transportation, communications, electric power, military, and navigation. In recent years, the global lead-acid battery market has continued to grow, reaching US$57.8 billion in 2019. However, with the rapid development of lead-acid batteries, there are also potential problems in the disposal of retired lead-acid batteries. In my country, about 3 million tons of lead-acid batteries are decommissioned every year, and only about 30% are recycled through formal channels. Compared with power lithium-ion batteries, lead-acid batteries are cheap...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/42H01M10/08
CPCH01M10/4242H01M10/08Y02E60/10Y02W30/84
Inventor 黄其金阳
Owner 河南润祥能源科技有限公司
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