A high-toughness aluminum material for battery packaging

A battery packaging and high toughness technology, applied in furnaces, heat treatment equipment, manufacturing tools, etc., can solve problems such as cracking and product quality that is difficult to reach the level of hot rolling, and achieve the effect of refining grain size and enhancing tensile strength

Active Publication Date: 2022-05-13
JIANGSU DINGSHENG NEW MATERIAL JOINT STOCK CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The boiling point temperature of aluminum and manganese is not much different, and there will be no problems such as the deterioration of weld quality due to the burning of metal elements during welding. During the annealing process, structural defects such as uneven grains, macro segregation or local cracking in the forming are prone to occur, and the quality of the final product is difficult to reach the level of hot rolling. Therefore, how to produce high-quality capacitor shells by casting and rolling The use of aluminum is a research topic for many professional and technical personnel

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A high-toughness aluminum material for battery outer packaging, the composition and mass percentage are: Si 0.225%, Fe 0.517%, the content ratio of Fe / Si is controlled to 2.30, Cu 0.168%, Mn 1.151%, Mg 0.594%, The balance is Al.

[0024] According to the above composition control, the aluminum material is prepared, and the specific preparation steps are as follows:

[0025] (1) The raw materials are smelted according to the above chemical components, slag removal, degassing and purification of the melt; the smelting temperature is 700-750°C;

[0026] (2) Cool the smelted material to the rolling temperature, and at the same time, use aluminum alloy continuous casting and rolling equipment to continuously cast and roll copper-titanium-zinc alloy to obtain a cast-rolled billet. The casting-rolling speed is 700-800mm / min, and the casting-rolling The temperature is 650-750°C;

[0027] (3) The casting and rolling billet is rolled to the middle thickness through two passes o...

Embodiment 2

[0033] A high-toughness aluminum material used for battery outer packaging, the composition and mass percentage are: Si 0.2-0.3%, Fe 0.4-0.6%, the content ratio of Fe / Si is controlled to be 1.5-2.5, Cu 0.1-0.3%, Mn 0.9-1.3%, Mg 0.4-0.7%, the balance is Al.

[0034] According to the above composition control, the aluminum material is prepared, and the specific preparation steps are as follows:

[0035] (1) The raw materials are smelted according to the above chemical components, slag removal, degassing and purification of the melt; the smelting temperature is 700-750°C;

[0036] (2) Cool the smelted material to the rolling temperature, and at the same time, use aluminum alloy continuous casting and rolling equipment to continuously cast and roll copper-titanium-zinc alloy to obtain a cast-rolled billet. The casting-rolling speed is 700-800mm / min, and the casting-rolling The temperature is 650-750°C;

[0037] (3) The casting and rolling billet is rolled to the middle thickness...

Embodiment 3

[0043] A high-toughness aluminum material used for battery outer packaging, the composition and mass percentage are: Si 0.2-0.3%, Fe 0.4-0.6%, the content ratio of Fe / Si is controlled to be 1.5-2.5, Cu 0.1-0.3%, Mn 0.9-1.3%, Mg 0.4-0.7%, the balance is Al.

[0044] According to the above composition control, the aluminum material is prepared, and the specific preparation steps are as follows:

[0045] (1) The raw materials are smelted according to the above chemical components, slag removal, degassing and purification of the melt; the smelting temperature is 700-750°C;

[0046] (2) Cool the smelted material to the rolling temperature, and at the same time, use aluminum alloy continuous casting and rolling equipment to continuously cast and roll copper-titanium-zinc alloy to obtain a cast-rolled billet. The casting-rolling speed is 700-800mm / min, and the casting-rolling The temperature is 650-750°C;

[0047] (3) The casting and rolling billet is rolled to the middle thickness...

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Abstract

The invention discloses an aluminum material used for producing battery casings by casting and rolling slabs. The composition and mass percentage are: Si 0.06-0.20%, Fe 0.40-0.65, Cu 0.08-0.20%, Mn≤0.03%, Zn≤0.03%, Ti≤0.03%, Ni≤0.03%, and the balance is Al; the steps of the preparation method include raw material casting, the first rough rolling, the first heat treatment, intermediate rolling, the first finish rolling, and the second heat treatment , the present invention has carried out homogenization annealing at 1.5-4.0 mm thickness, has eliminated the segregation of composition and organization, increased cube texture, and once more annealed when finished product, makes the rolling texture formed in rolling process and cube The texture forms a reasonable ratio in terms of quantity and strength. After deep drawing the aluminum plate, 8 small lugs with relatively uniform peak heights can be obtained, so as to achieve the purpose of reducing the lug rate and improve the deep drawing of aluminum for battery casings. performance.

Description

technical field [0001] The invention relates to a high-toughness aluminum material used for battery outer packaging. Background technique [0002] Aluminum and aluminum alloy strips can be widely used in home appliances, toys, power supplies, energy-saving lamps, communications, national defense, transportation and other fields, such as computer motherboards, automotive circuit boards, etc. The current electronic technology is developing rapidly no matter in depth or breadth, and its application fields have penetrated into all walks of life and families. [0003] The casing of the power battery is generally made of 3003 or 3005 aluminum alloy. 3003 aluminum plate has good formability, good plasticity, and high pressure resistance. However, with the rapid development of the communication and media industry, the functions of mobile phones continue to improve and increase, requiring manufacturers to continuously reduce manufacturing costs. More new requirements have been impo...

Claims

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Application Information

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Patent Type & AuthorityPatents(China)
IPC IPC(8): C22C21/00C22C1/02C22F1/02C22F1/04C21D9/52B21B3/00
CPCC22C21/00C22C1/026C22F1/02C22F1/04C21D9/52B21B3/00B21B2003/001
Inventor吴保剑王毓玮
OwnerJIANGSU DINGSHENG NEW MATERIAL JOINT STOCK CO LTD