Coating film for positive and negative plate of high-rate lead-acid storage battery and preparation method

A lead-acid battery, positive and negative plate technology, applied in the direction of lead-acid battery electrodes, etc., can solve the problems of unsatisfactory high-rate performance, poor film quality, and high film density, and improve high-rate performance. , The effect of reasonable component configuration and moderate density

Inactive Publication Date: 2019-05-14
SHUANGDENG GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the poor quality of the external coating on the positive and negative plates of the currently commercially available lead-acid batteries, the high rate performance cannot meet expectations
The reason is that the component configuration of the coating film made by the existing technology is not reasonable enough, the preparation process is not mature enough, the density of the produced coating film is relatively high, and the problems of poor liquid storage, liquid absorption and air permeability are common in use.
In a nutshell, the film produced by the prior art needs to be further improved and improved.

Method used

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  • Coating film for positive and negative plate of high-rate lead-acid storage battery and preparation method
  • Coating film for positive and negative plate of high-rate lead-acid storage battery and preparation method
  • Coating film for positive and negative plate of high-rate lead-acid storage battery and preparation method

Examples

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Effect test

Embodiment 1

[0034] A film preparation method for positive and negative electrodes of high-rate lead-acid batteries, the method is carried out according to the following steps:

[0035] 1. Measure the raw materials according to the component configuration table of the embodiment, including 400kg of glass fiber cotton, 50kg of hydrophilic fiber, 25kg of fumed silica and 25kg of PET. The diameter of the glass fiber cotton used in this example is 0.5 μm, the diameter of the hydrophilic fiber is 10 μm, the content of fumed silica is 99.9%, and the surface area of ​​PET is 175m 2 / g, the primary particle size is 10nm, and the diameter is 20μm. Put the measured raw materials into the material tank of the disperser, then inject deionized water into the material tank, turn on the disperser and disperse at a speed of 1500r / min for 1.5h, so that the raw materials are evenly dispersed, and the prepared raw slurry spare.

[0036] 2. Dilute the original slurry

[0037] Take the original slurry, and ...

Embodiment 2

[0049] A film preparation method for positive and negative plates of high-rate lead-acid batteries, the method is carried out according to the following steps:

[0050] 1. Measure the raw materials according to the component configuration table of the embodiment, including 425kg of glass fiber cotton, 45kg of hydrophilic fiber, 15kg of fumed silica and 15kg of PET. The diameter of glass fiber cotton used in this example is 1.0 μm, the diameter of hydrophilic fiber is 15 μm, the content of fumed silica is 99.9%, and the surface area of ​​PET is 200m 2 / g, the primary particle size is 10nm, and the diameter is 15μm. Put the measured raw materials into the material tank of the disperser, then inject deionized water into the material tank, turn on the disperser and disperse at a speed of 1800r / min for 2 hours, so that all raw materials are evenly dispersed, and the prepared raw slurry is ready for use .

[0051] 2. Dilute the original slurry

[0052] Take the original slurry, a...

Embodiment 3

[0064] A film preparation method for positive and negative plates of high-rate lead-acid batteries, the method is carried out according to the following steps:

[0065] 1. Measure the raw materials according to the component configuration table of the embodiment, including 450kg of glass fiber cotton, 40kg of hydrophilic fiber, 5kg of fumed silica and 5kg of PET. The diameter of the glass fiber cotton used in this example is 2.0 μm, the diameter of the hydrophilic fiber is 20 μm, the content of fumed silica is 99.8%, and the surface area of ​​PET is 225m 2 / g, the primary particle size is 12nm, and the diameter is 20μm. Put the measured raw materials into the material tank of the disperser, then pour deionized water into the material tank, turn on the disperser and disperse at a speed of 2000r / min for 2 hours, so that all raw materials are evenly dispersed, and the prepared raw slurry is ready for use .

[0066] 2. Dilute the original slurry

[0067] Take the original slurr...

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Abstract

The invention discloses a coating film for a positive and negative plate of a high-rate lead-acid storage battery, wherein the coating film raw materials comprise glass fiber cotton, hydrophilic fibers, fumed silica and PET. The invention further provides a matched preparation method. The method comprises the following steps that the weighed raw materials are put into a dispersing machine in one time, and deionized water is added to prepare raw slurry with the concentration percent of 0.9% to 1.0%. The raw slurry is taken, and the raw slurry is diluted by adding the deionized water until the concentration is 0.2% to 0.6%; then the slurry is injected into a filter to obtain fine slurry, and the fine slurry is injected into a forming machine to form a wet-coating film; the wet-coating film is conveyed into a drying tunnel to be dried, and a compression roller rolling coating film is arranged at the outlet of the drying tunnel; and finally, the coating film is cut according to the sizes and shapes of the matched positive and negative plates. The preparation method disclosed by the invention is reasonable in component configuration, and simple and convenient in method; and the preparedcoating film is moderate in density and high in air permeability, so that the liquid storage capacity and the liquid absorption capacity are improved, and the high-rate performance of the positive electrode and the negative electrode of the lead-acid storage battery is remarkably improved.

Description

technical field [0001] The invention belongs to the field of electrochemical battery manufacturing, in particular, the invention relates to a coating film that can be coated, especially a coating film used for the positive and negative plates of a high-rate lead-acid storage battery. The invention also relates to a matching preparation method. Background technique [0002] With the development of computer technology, the construction of IDC data centers in various industries is accelerating. Since the supporting equipment of the IDC data center is very important, there are high technical requirements for the supporting backup power equipment, especially for the safety, reliability and discharge rate of the power equipment operation. Therefore, conventional lead-acid batteries cannot meet the supporting requirements of backup power for IDC data centers. In recent years, the high-rate lead-acid batteries developed in this industry have been widely used, providing equipment g...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/14H01M4/20C04B26/10
CPCY02E60/10
Inventor 陈荣华树荣亮李静徐冬明楼志强杨宝峰
Owner SHUANGDENG GRP
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