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Preparation method of positive grid

A positive plate and grid technology, which is applied in the field of positive grid preparation, can solve the problems of lead-acid batteries such as short life, battery loss of capacity, and lead dioxide shedding, so as to improve quality and mechanical strength, improve interface bonding, and improve binding effect

Active Publication Date: 2021-03-16
广东奥克莱集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The main reason for the short life of the lead-acid battery is that the positive active material of the lead-acid battery softens, causing the lead dioxide to fall into the electrolyte, forming a short circuit inside the battery, causing the battery to lose capacity, causing the battery to fail, and causing the positive active material to The reason for softening and falling off has a lot to do with the mechanical strength of the positive grid

Method used

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  • Preparation method of positive grid

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Effect test

Embodiment 1

[0027] A method for preparing a positive electrode grid, comprising the following steps:

[0028] S1, configure the alloy liquid;

[0029] S2, heating the grid gravity casting mold, so that the temperature of the grid gravity casting mold upper opening reaches 170°C, the grid gravity casting mold lower opening temperature reaches 170°C, and heats the temperature of the lead pipe to 560°C;

[0030] S3. After removing the surface impurities, spray a mold release agent to the grid transverse rib cavity and the grid vertical rib cavity inside the grid gravity casting mold;

[0031] S4, the alloy liquid is added to the lead spoon through the lead pipe, and the lead spoon is heated to 560 ° C, and the alloy in the lead spoon is poured into the grid gravity casting mold for casting;

[0032] S5. After the casting is completed, the resultant is sprayed with atomized water to cool, and then cut to obtain the positive electrode grid.

[0033] The alloy liquid is made of the following ...

Embodiment 2

[0044] A method for preparing a positive electrode grid, comprising the following steps:

[0045] S1, configure the alloy liquid;

[0046] S2, heating the grid gravity casting mold, so that the temperature of the grid gravity casting mold upper opening reaches 170°C, the grid gravity casting mold lower opening temperature reaches 170°C, and heats the temperature of the lead pipe to 560°C;

[0047] S3. After removing the surface impurities, spray a mold release agent to the grid transverse rib cavity and the grid vertical rib cavity inside the grid gravity casting mold;

[0048] S4, the alloy liquid is added to the lead spoon through the lead pipe, and the lead spoon is heated to 560 ° C, and the alloy in the lead spoon is poured into the grid gravity casting mold for casting;

[0049] S5. After the casting is completed, the resultant is sprayed with atomized water to cool, and then cut to obtain the positive electrode grid.

[0050] The alloy liquid is made of the following ...

Embodiment 3

[0061] A method for preparing a positive electrode grid, comprising the following steps:

[0062] S1, configure the alloy liquid;

[0063] S2, heating the grid gravity casting mold, so that the temperature of the grid gravity casting mold upper opening reaches 170°C, the grid gravity casting mold lower opening temperature reaches 170°C, and heats the temperature of the lead pipe to 560°C;

[0064] S3. After removing the surface impurities, spray a mold release agent to the grid transverse rib cavity and the grid vertical rib cavity inside the grid gravity casting mold;

[0065] S4, the alloy liquid is added to the lead spoon through the lead pipe, and the lead spoon is heated to 560 ° C, and the alloy in the lead spoon is poured into the grid gravity casting mold for casting;

[0066] S5. After the casting is completed, the resultant is sprayed with atomized water to cool, and then cut to obtain the positive electrode grid.

[0067] The alloy liquid is made of the following ...

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Abstract

The invention discloses a preparation method of a positive grid. The preparation method comprises the following steps: S1, preparing alloy liquid; S2, heating the grid gravity casting mold, and increasing the temperature of the lead conveying pipe to 540-580 DEG C; S3, after surface impurities are removed, spraying a release agent into a grid transverse rib cavity and a grid vertical rib cavity inthe grid gravity casting mold; S4, adding the alloy liquid into a lead spoon through a lead conveying pipe, heating the lead spoon to 540-580 DEG C, and injecting the alloy in the lead spoon into a grid gravity casting mold for casting; and S5, after the casting is finished, spraying atomized water to the obtained product for cooling, and cutting to obtain the positive grid. The positive grid provided by the invention has high mechanical strength, is beneficial to adhesion of active substances, improves the binding force with the active substances, and does not cause softening and falling ofthe active substances, so that the cycle life is remarkably prolonged.

Description

technical field [0001] The invention relates to the technical field of storage battery grids, in particular to a method for preparing positive grids. Background technique [0002] Lead-acid batteries are mainly composed of plates, separators, electrolyte and casing. The pole plate is one of the core components of the battery. It is made of lead paste coated on the grid and solidified by compaction and acid, and is made into a positive plate and a negative plate respectively. The charge and discharge of the battery is achieved by the chemical reaction between the active material on the plate and the sulfuric acid in the electrolyte. Therefore, the grid is the main component of the lead-acid battery, commonly known as the lattice body. The grid is formed by casting or netting of lead-based alloy. It has three functions in the lead-acid battery: one is as the carrier of the active material, which plays the role of supporting the skeleton and adhering the active material; the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/73H01M4/16H01M10/12
CPCH01M4/73H01M4/16H01M10/12Y02E60/10Y02P70/50
Inventor 聂世康邵双喜
Owner 广东奥克莱集团有限公司
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