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A method for aging treatment of grid interface

An aging treatment and interface treatment technology, applied in lead-acid battery electrodes, metal material coating process, electrode carrier/current collector, etc., can solve the problem of no chemical method research, etc. Reduce the effect of direct contact

Active Publication Date: 2019-01-11
HUNAN FENGRI ELECTRIC GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, many manufacturers generally adopt physical methods for the aging treatment of the battery grid interface, and have not conducted in-depth research on chemical methods.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A grid interface aging treatment method, comprising the following steps:

[0029] 1. Material selection: The material selection is sodium stannate and sodium hexametaphosphate, because these two materials are soluble in water, and sodium ions, tin ions and phosphate ions are not harmful to lead-acid batteries, only good, stannic acid Sodium and sodium hexametaphosphate are dissolved in water to form a liquid with glue, which can be adsorbed on the surface of the grid, and sodium hexametaphosphate can react with lead to form a lead complex of sodium phosphate with glue.

[0030] 2. Solution preparation: (1) Preparation of sodium hexametaphosphate solution: Weigh 1000g of pure water and pour it into a beaker, then weigh 20g of sodium hexametaphosphate and add it to a beaker with pure water, stirring and dissolving continuously to prepare hexametaphosphoric acid Sodium solution, set aside. (2) Preparation of sodium stannate solution: Weigh 1000g of pure water and pour it ...

Embodiment 2

[0033] A grid interface aging treatment method, comprising the following steps:

[0034] A1. Preparation of sodium hexametaphosphate solution: Weigh 1000g of pure water and pour it into a beaker, then weigh 10g of sodium hexametaphosphate and add it to the beaker with pure water, stir and dissolve continuously, and prepare a sodium hexametaphosphate solution for later use.

[0035] A2. Preparation of sodium stannate solution: Weigh 1000g of pure water and pour it into a beaker, then weigh 2.5g of sodium stannate and add it to the beaker with pure water, stir and dissolve continuously, and prepare sodium stannate solution for later use.

[0036] A3, solution mixing: first the sodium hexametaphosphate solution prepared in step A1 and the sodium stannate solution prepared in A2 are added in the same container, stirred and mixed evenly to form a mixed solution for interface treatment; wherein, the sodium hexametaphosphate solution The mass ratio to sodium stannate solution is 0.5:...

Embodiment 3

[0041] A grid interface aging treatment method, comprising the following steps:

[0042] A1. Preparation of sodium hexametaphosphate solution: Weigh 1000g of pure water and pour it into a beaker, then weigh 30g of sodium hexametaphosphate and add it into the beaker with pure water, stirring and dissolving continuously, to prepare a sodium hexametaphosphate solution for later use.

[0043] A2. Preparation of sodium stannate solution: Weigh 1000g of pure water and pour it into a beaker, then weigh 7.5g of sodium stannate and add it to the beaker with pure water, stir and dissolve continuously, and prepare sodium stannate solution for later use.

[0044] A3. Solution mixing: the sodium hexametaphosphate solution prepared in step A1 and the sodium stannate solution prepared in step A2 are added into the same container according to the mass ratio of 1.5:1, stirred and mixed evenly to form a mixed solution for interface treatment.

[0045] A4. Grid immersion: put the grid into the i...

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PUM

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Abstract

The invention relates to a grid interface aging treatment method. The grid interface aging treatment method comprises the following steps that a sodium hexametaphosphate solution and a sodium stannatesolution are prepared, the two solutions are mixed to form an interface treatment mixed solution, a grid is put into the interface treatment mixed solution to be soaked and then taken out to be air-dried, and then the air-dried grid is put into a constant-temperature oven to be subjected to aging treatment. According to the grid interface aging treatment method, the bonding force between a positive grid and active substances is increased, the corrosion rate of the positive grid is decreased, and the battery life is prolonged; and meanwhile, the conductivity of the positive grid and the activesubstances is improved, the battery charging speed is higher, and the charge acceptance is higher.

Description

technical field [0001] The invention belongs to the technical field of batteries, and in particular relates to an aging treatment method for a grid interface inside a battery. Background technique [0002] In recent years, due to the continuous growth of the battery market, customers have higher and higher requirements for battery performance, which has prompted battery manufacturers to continuously study the performance improvement of batteries. One of the key technologies to improve the performance of high-power batteries, high-temperature batteries, start-stop batteries, etc. is to study the aging treatment of the battery grid interface. At present, many manufacturers generally use physical methods for the aging treatment of the battery grid interface, and have not conducted in-depth research on chemical methods. [0003] Usually, the combination of battery active material and grid interface affects the performance of the battery, especially high-power batteries, starter...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22F1/12C23C22/07H01M4/16H01M4/72
CPCC22F1/12C23C22/07H01M4/16H01M4/72Y02E60/10
Inventor 汤代早黎福根
Owner HUNAN FENGRI ELECTRIC GROUP
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