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Fiberglass membrane of lead-acid battery

A technology of lead-acid battery and glass fiber, which is applied in the direction of battery components, circuits, electrical components, etc. It can solve the problems of affecting the cycle life of the battery, the poor air permeability of the polyolefin diaphragm, and the inability to meet the rapid charging and discharging of the battery. Achieve the effects of low oxidation resistance, good hydrophilicity and small pore size

Inactive Publication Date: 2016-07-20
JIANGSU HUAFU STORAGE NEW TECH DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, the polyolefin separator has poor air permeability and cannot well meet the needs of rapid charging and discharging of the battery, which affects the cycle life of the battery

Method used

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  • Fiberglass membrane of lead-acid battery

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Glass fiber diaphragm for lead-acid batteries, see figure 1 , Including a glass fiber and polyvinyl alcohol fiber composite layer 1, a polymer and water-soluble resin composite layer on both surfaces of the glass fiber and polyvinyl alcohol fiber composite layer 2, a polymer and water-soluble resin composite layer outside Nanoparticle coating on the surface3.

[0017] In the composite layer of glass fiber and polyvinyl alcohol fiber, the mass ratio of glass fiber to polyvinyl alcohol is 2:1.

[0018] In the polymer and water-soluble resin composite layer, the polymer is polypropylene and polyethylene terephthalate with a mass ratio of 1:1, and the water-soluble resin is polyethylene with a mass ratio of 1:2:1 Mixture of alcohol, polyvinylpyrrolidone and polyethylene oxide.

[0019] The nanoparticle coating is a coating of ceramic particles and a resin composite nanoparticle with a mass ratio of 1:3; the ceramic particles are a mixture of aluminum oxide, silicon oxide, and ti...

Embodiment 2

[0025] Glass fiber diaphragm for lead-acid batteries, see figure 1 , Including a glass fiber and polyvinyl alcohol fiber composite layer 1, a polymer and water-soluble resin composite layer on both surfaces of the glass fiber and polyvinyl alcohol fiber composite layer 2, a polymer and water-soluble resin composite layer outside Nanoparticle coating on the surface3.

[0026] In the composite layer of glass fiber and polyvinyl alcohol fiber, the mass ratio of glass fiber to polyvinyl alcohol is 1:1.

[0027] In the polymer and water-soluble resin composite layer, the polymer is one or a mixture of several kinds of polyethylene, and the water-soluble resin is hydroxymethyl cellulose and cellulose acetate with a mass ratio of 1:1:2 , A mixture of cellulose acetate butyrate.

[0028] The nanoparticle coating is a ceramic particle and a resin composite nanoparticle coating with a mass ratio of 1:2; the ceramic particles are a mixture of zirconia and barium titanate with a mass ratio of ...

Embodiment 3

[0031] Glass fiber diaphragm for lead-acid batteries, see figure 1 , Including a glass fiber and polyvinyl alcohol fiber composite layer 1, a polymer and water-soluble resin composite layer set on both surfaces of the glass fiber and polyvinyl alcohol fiber composite layer 2, a polymer and water-soluble resin composite layer outside Nanoparticle coating on the surface3.

[0032] In the composite layer of glass fiber and polyvinyl alcohol fiber, the mass ratio of glass fiber to polyvinyl alcohol is 3:1.

[0033] In the composite layer of polymer and water-soluble resin, the polymer is polyimide, and the water-soluble resin is a mixture of cellulose acetate butyrate, cellulose acetate propionate, and pullulan with a mass ratio of 1:1:1. mixture.

[0034] The nanoparticle coating is a ceramic particle and a resin composite nanoparticle coating with a mass ratio of 1:4; the ceramic particles are barium sulfate; and the resin is polystyrene.

[0035] The preparation method is the same as...

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Abstract

The invention provides a fiberglass membrane of a lead-acid battery. The fiberglass membrane comprises a fiberglass and polyvinyl alcohol fiber composite layer, polymer and water-soluble resin composite layers arranged on two surfaces of the fiberglass and polyvinyl alcohol fiber composite layer, and nano-particle coatings arranged on the outer surfaces of the polymer and water-soluble resin composite layers. According to the fiberglass membrane of the lead-acid battery, the fiberglass membrane is applied to the production of battery membrane paper, the produced battery membrane paper has better performance than the common battery membrane paper, such as larger liquid absorption amount, higher liquid absorption speed and better hydrophily, and keeps high liquid absorption rate during the whole life; meanwhile, the fiberglass membrane has the advantages of large superficial area, high porosity, small pore diameter, high chemical purity, fewer detrimental impurities, excellent acid resistance and oxidation resistance and small resistance.

Description

Technical field [0001] The invention particularly relates to a glass fiber diaphragm of a lead-acid battery. Background technique [0002] Battery separator paper is used as a separator material to separate the positive and negative electrodes in the battery. The main function is to prevent the positive and negative electrodes in the battery from directly contacting and short-circuit, and to allow the ions in the electrolyte to pass freely between the positive and negative electrodes while the electrons cannot pass freely. Among the various parts of the battery, the diaphragm material plays a pivotal role. Its performance determines the interface structure and internal resistance of the battery, and directly affects the battery's capacity and cycle performance. A separator with excellent performance plays an important role in improving the overall performance of the battery. [0003] Currently, battery separators are mainly polyolefin separators, which have a sufficiently small po...

Claims

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Application Information

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IPC IPC(8): H01M2/16H01M50/44
CPCH01M50/431H01M50/44Y02E60/10
Inventor 周寿斌张校刚汪的华何建平彭创吴战宇毛旭晖钱帮芬
Owner JIANGSU HUAFU STORAGE NEW TECH DEV
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