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Preparation method of 1100d alloy 9μm double-sided glossy aluminum foil for lithium battery

A lithium battery and alloy technology, applied in the field of aluminum alloy materials, can solve the problems of poor tensile strength and elongation, general aluminum foil performance, general performance of lithium batteries, etc., and achieve the effect of improving mechanical performance indicators and process science.

Active Publication Date: 2021-01-08
江苏大亚电子新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the 1235 alloy 10μm single-sided light aluminum foil generally used in China has average performance, poor tensile strength and elongation, which makes the overall performance of lithium batteries relatively average.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] High-performance aluminum foil for 1100D alloy lithium battery, the composition and mass percentage of the aluminum foil for lithium ion battery are: Cu: 0.15%; Fe: 0.50%; Si: 0.25%; Mn: ≤0.01%; Mg: ≤0.01% ; Ti: 0.03%; Al: ≥99.00%, and the rest are a small amount of impurity elements.

[0027] The preparation method of the aluminum foil for the above-mentioned high-performance 1100D alloy lithium battery comprises the following steps:

[0028] (1) Smelting, casting and rolling: heating and smelting the above-mentioned ingredients and raw materials in mass percentage and electrolytic aluminum water into an aluminum alloy melt for producing high-performance 1100D alloy lithium battery aluminum foil; then refining and filtering in turn; The filtered aluminum alloy melt is continuously cast and rolled into a billet of 7.0±0.2mm;

[0029] (2) Cold rolling, intermediate homogenization annealing: the billet is rolled for six passes, and when the thickness of the billet is rol...

Embodiment 2

[0039] High-performance aluminum foil for 1100D alloy lithium battery, the composition and mass percentage of the aluminum foil for lithium ion battery are: Cu: 0.16%; Fe: 0.47%; Si: 0.27%; Mn: ≤0.01%; Mg: ≤0.01% ; Ti: 0.02%; Al: ≥99.00%, and the rest are a small amount of impurity elements.

[0040] The preparation method of the aluminum foil for the above-mentioned high-performance 1100D alloy lithium battery comprises the following steps:

[0041] (1) Smelting, casting and rolling: heating and smelting the above-mentioned ingredients and raw materials in mass percentage and electrolytic aluminum water into an aluminum alloy melt for producing high-performance 1100D alloy lithium battery aluminum foil; then refining and filtering in turn; The filtered aluminum alloy melt is continuously cast and rolled into a billet of 7.0±0.2mm;

[0042] (2) Cold rolling, intermediate homogenization annealing: the billet is rolled for six passes, and when the thickness of the billet is rol...

Embodiment 3

[0052] High-performance aluminum foil for 1100D alloy lithium battery, the composition and mass percentage of the aluminum foil for lithium ion battery are: Cu: 0.18%; Fe: 0.45%; Si: 0.30%; Mn: ≤0.01%; Mg: ≤0.01% ; Ti: 0.01%; Al: ≥99.00%, and the rest are a small amount of impurity elements.

[0053] The preparation method of the aluminum foil for the above-mentioned high-performance 1100D alloy lithium battery comprises the following steps:

[0054] (1) Smelting, casting and rolling: heating and smelting the above-mentioned ingredients and raw materials in mass percentage and electrolytic aluminum water into an aluminum alloy melt for producing high-performance 1100D alloy lithium battery aluminum foil; then refining and filtering in turn; The filtered aluminum alloy melt is continuously cast and rolled into a billet of 7.0±0.2mm;

[0055] (2) Cold rolling, intermediate homogenization annealing: the billet is rolled for six passes, and when the thickness of the billet is rol...

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Abstract

The invention belongs to the technical field of aluminum alloy materials and relates to preparation of a double-side-finished aluminum foil, in particular to 1100D alloy 9-micrometer double-side-finished aluminum foil for lithium batteries, comprising, by mass, 0.15-0.18% of Cu, 0.45-0.50% of Fe, 0.25-0.30% of Si, < / =0.01% of Mn, < / =0.01% of Mg, 0.01-0.03% of Ti, and the balance of Al and inevitable impurity elements. The invention also discloses a preparation method of the 1100D alloy 9-micrometer double-side-finished aluminum foil for lithium batteries; the preparation method includes smelting, casting and rolling, cold rolling and intermediate uniform annealing, foil rolling, and slitting. Modified 1100D alloy is used herein having reasonable alloy element ratio; the preparation methodis scientific; mechanical property indexes of products can be increased; both tensile strength and elongation are higher than those of domestic like products; the application requirements of customersof lithium battery aluminum foils can be met.

Description

technical field [0001] The invention belongs to the technical field of aluminum alloy materials, and relates to the preparation of double-sided glossy aluminum foil, in particular to a preparation method of 1100D alloy 9 μm double-sided glossy aluminum foil for lithium batteries. Background technique [0002] With the rapid popularization and development of digital 3C products, especially the current smart phone replacement is accelerating, the requirements for battery life are getting higher and higher, so the requirement for improving the energy density of lithium batteries is becoming more and more urgent. In order to improve the energy density of lithium batteries, aluminum foil thinning is a way to increase energy density, but at the same time, aluminum foil is prone to breakage during the rolling process of lithium battery production, so the demand for high-performance aluminum foil for lithium batteries is gradually increasing . [0003] At present, the 1235 alloy 10...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C21/00C22C1/02C22F1/04
CPCC22C1/026C22C21/00C22F1/04
Inventor 周军毛国回李俊颜建军夏俊杰
Owner 江苏大亚电子新材料科技有限公司
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