A method for recycling the scrapped wet plate of lead-acid battery

A technology of lead-acid battery and wet plate, which is applied in the direction of lead-acid battery, lead-acid battery construction, battery recycling, etc., can solve the problems of low utilization rate, incomplete recycling and reuse of scrapped wet plate, etc., to improve consistency, Efficient use and the effect of suppressing contact resistance

Active Publication Date: 2019-12-06
CHAOWEI POWER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention aims to solve the problem of incomplete recycling and low utilization rate of the existing lead-acid battery scrapped wet plates, and provides a method for recycling the scrapped wet plates of lead-acid batteries, using recycled powder and recycled conductive grids The prepared high-capacity battery can reach the existing battery life and discharge capacity

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] The positive and negative wet plates that do not meet the production requirements during the production and coating process are selected and processed, including the following steps:

[0027] 1. Rinse the wet plate to separate the grid from the lead plaster: put the plate with lack of paste, unevenness, and excess paste on the surface of the wet plate during the coating process into a flat washing conveyor belt to separate the grid from the lead paste.

[0028] 2. The surface treatment of the pole plate grid is classified according to the integrity. The surface treatment of the pole plate grid includes two steps, namely, the use of chemical corrosion to treat the lead oxide film on the surface of the pole plate and the surface coating treatment of the pole plate grid;

[0029] The chemical treatment of the lead oxide film on the surface of the grid adopts a 30g / L cleaning solution prepared by dissolving sodium hydroxide in distilled water; in the cleaning solution prepar...

Embodiment 2

[0038] The positive and negative wet plates that do not meet the production requirements during the production and coating process are selected and processed, including the following steps:

[0039] 1. Rinse the wet plate to separate the grid from the lead plaster: put the plate with lack of paste, unevenness, and excess paste on the surface of the wet plate during the coating process into a flat washing conveyor belt to separate the grid from the lead paste.

[0040] 2. The surface treatment of the pole plate grid is classified according to the integrity. The surface treatment of the pole plate grid includes two steps, namely, the use of chemical corrosion to treat the lead oxide film on the surface of the pole plate and the surface coating treatment of the pole plate grid;

[0041] The chemical treatment of the lead oxide film on the surface of the grid adopts a 40g / L cleaning solution prepared by dissolving potassium hydroxide in distilled water; in the cleaning solution prepa...

Embodiment 3

[0050] The positive and negative wet plates that do not meet the production requirements during the production and coating process are selected and processed, including the following steps:

[0051] 1. Rinse the wet plate to separate the grid from the lead plaster: put the plate with lack of paste, unevenness, and excess paste on the surface of the wet plate during the coating process into a flat washing conveyor belt to separate the grid from the lead paste.

[0052] 2. The surface treatment of the pole plate grid is classified according to the integrity. The surface treatment of the pole plate grid includes two steps, namely, the use of chemical corrosion to treat the lead oxide film on the surface of the pole plate and the surface coating treatment of the pole plate grid;

[0053] The chemical treatment of the lead oxide film on the surface of the grid adopts a 35g / L cleaning solution prepared by dissolving sodium hydroxide in distilled water; in the cleaning solution prepar...

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Abstract

The invention discloses a method for reusing a waste wet plate of a lead-acid battery, which comprises the following steps: separation of a grid and lead paste, surface treatment, step-by-step processing of the recovered lead paste, and battery assembly. The invention can achieve 100% high-efficiency utilization of the scrapped wet plate in the production process, and prepare a finished battery; it can also determine the effective components of the lead paste in the process, and improve the consistency between the lead-acid batteries added with recycled powder; The treated grid has high electrical conductivity, and can effectively suppress the contact resistance between the living thing and the grid caused by grid corrosion in the later stage of the cycle, so that the reaction can proceed rapidly.

Description

technical field [0001] The invention belongs to the technical field of lead-acid battery manufacturing, and in particular relates to a method for reusing scrapped wet plates of lead-acid batteries. Background technique [0002] The continuous introduction of national policies on environmental protection and labor protection means that the production process of lead-acid battery manufacturers should meet the requirements of environmental friendliness. While lead-acid batteries are being used in large quantities, the recycling of batteries has become a focus of concern for governments and users in various countries. There are strict regulations on the use and recycling of lead-acid batteries. The government encourages enterprises to develop new technologies to prolong battery life or improve the utilization of waste batteries. The waste or raw materials generated in the process can be recycled in the process, which can effectively reduce the pressure of lead recovery and impr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M10/54H01M4/68H01M4/66H01M4/57H01M10/12C22B7/00C22B13/00C25D11/34
CPCC22B7/006C22B13/045C25D11/026C25D11/34H01M4/57H01M4/667H01M4/668H01M4/68H01M10/12H01M10/54Y02E60/10Y02W30/84Y02P10/20Y02P70/50
Inventor 吴亮张绍辉
Owner CHAOWEI POWER CO LTD
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