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Grid composite fiber

A composite fiber and grid technology, applied in the direction of electrode carrier/current collector, electrical components, battery electrodes, etc., can solve the problems of reducing the service life of lead-acid batteries, failure of lead-acid batteries, heavy metal lead pollution, etc., and reduce heavy metal pollution. , Good structural strength and dimensional stability, the effect of improving the service life

Inactive Publication Date: 2018-07-27
GUANGZHOU ZHUOYUE POWER NEW ENERGY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Common grid materials currently used in production include lead-antimony alloys, low-antimony or ultra-low-antimony alloys, lead-calcium, etc. The grids formed by these materials will be corroded into PbO during the charging process of the battery. 2 , while PbO 2 The molecular volume of PbO is about 1.4 times the volume of lead, plus PbO 2 The film has certain pores, so the volume of the corrosion product is much larger than that of the lead alloy, so that the positive electrode grid is under stress, and then gradually creeps and grows linearly, and finally loses the role of supporting the active material, making all The above-mentioned active substances soften and fall off, resulting in the failure of the lead-acid battery and reducing the service life of the lead-acid battery
In addition, grids and metal busbars contain a large amount of lead, which is likely to cause heavy metal lead pollution during the casting, chemical formation, and welding stages

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Such as figure 1 As shown, the grid composite fiber includes a core material and a fixing layer fixed on the surface of the core material, the diameter of the core material is 0.7 mm, and the thickness of the fixing layer is 0.3 mm. The cross-section of the grid composite fiber is triangular, wherein the cross-section of the core material is circular, and the cross-section of the fixing layer is triangular. The core material is carbon fiber, wherein the strength of carbon fiber is 2400MPa, and the modulus of elasticity is 250Gpa. The fixing layer includes the following raw materials in parts by mass: 92 parts of zinc alloy coating material and 8 parts of composite material. The composite material includes the following raw materials in parts by mass: 36 parts of graphite fiber, 60 parts of polypropylene and 17 parts of silicon nitride; the zinc alloy coating includes the following raw materials in parts by mass: aluminum, cadmium, tin, antimony, magnesium, indium and ...

Embodiment 2

[0039] The difference between this embodiment and Embodiment 1 is that: the thickness of the core material is 0.7 mm, and the thickness of the fixing layer is 0.25 mm. The strength of carbon fiber is 2200MPa, and the modulus of elasticity is 230Gpa. The fixing layer includes the following raw materials in parts by mass: 94 parts of zinc alloy coating material and 6 parts of composite material. The composite material includes the following raw materials in parts by mass: 25 parts of graphite fiber, 75 parts of polypropylene and 25 parts of silicon nitride; the zinc alloy coating includes the following raw materials in parts by mass: aluminum, cadmium, tin, antimony, magnesium, indium and There are 4 parts of rare earth and 96 parts of zinc.

Embodiment 3

[0041] The difference between this embodiment and Embodiment 1 is that the thickness of the core material is 0.6 mm, and the thickness of the fixing layer is 0.3 mm. The strength of carbon fiber is 2100MPa, and the modulus of elasticity is 240Gpa. The fixing layer includes the following raw materials in parts by mass: 95 parts of zinc alloy coating material and 5 parts of composite material. The composite material includes the following raw materials in parts by mass: 20 parts of graphite fiber, 72 parts of polypropylene and 28 parts of silicon nitride; the zinc alloy coating includes the following raw materials in parts by mass: aluminum, cadmium, tin, antimony, magnesium, indium and There are 3 parts of rare earth and 97 parts of zinc.

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Abstract

The invention belongs to the technical field of storage batteries, and concretely discloses a grid composite fiber. The fiber comprises a core material and a fixed layer which is fixed on the surfaceof the core material; the core material is carbon fiber, and the fixed layer comprises a zinc alloy coating material and a composite material; the composite material comprises graphite fiber, polypropylene and silicon nitride. The grid composite fiber does not contain lead, and has the performance of safety and environmental protection; and at the same time the grid composite fiber has high strength and good conductive performance; the grid prepared by the grid composite fiber has high strength and high bearing capability, and falling of active substances is avoided.

Description

technical field [0001] The invention belongs to the technical field of accumulators, and in particular relates to a grid composite fiber. Background technique [0002] The development of science and technology, the improvement of human life quality, the crisis of oil resources, and the deteriorating ecological environment of the earth have formed a dual social background for the rapid development of science and technology and industry in the field of new secondary batteries and related materials. The urgent demand of the market has led to the emergence of new secondary batteries. Among them, the battery has the advantages of stable voltage, safety and reliability, low price, wide application range, abundant raw materials, and high recycling rate. It is the battery with the largest output and widest application among all kinds of batteries in the world. [0003] Lead-acid battery is the most commonly used type of storage battery. Its working principle is to use external elec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/66H01M4/68H01M4/73H01M4/74H01M10/06
CPCH01M4/667H01M4/68H01M4/73H01M4/747H01M10/06Y02E60/10
Inventor 何幸华李政文黎少伟何可立马俊
Owner GUANGZHOU ZHUOYUE POWER NEW ENERGY CO LTD
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