High-toughness aluminum material for battery outer package

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

Active Publication Date: 2021-06-18
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 the copper-titanium-zinc alloy to obtain the cast-rolled billet. The casting-rolling speed is 700-800mm / min. The rolling temperature is 650-750°C;

[0027] (3) Roughly rolling the casting billet to the middle thickness in two passes, and the middle thickn...

Embodiment 2

[0033] A high-toughness aluminum material 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 the copper-titanium-zinc alloy to obtain the cast-rolled billet. The casting-rolling speed is 700-800mm / min. The rolling temperature is 650-750°C;

[0037] (3) Roughly rolling the casting billet to the middle thickness in two passes, and t...

Embodiment 3

[0043] A high-toughness aluminum material 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 the copper-titanium-zinc alloy to obtain the cast-rolled billet. The casting-rolling speed is 700-800mm / min. The rolling temperature is 650-750°C;

[0047] (3) Roughly rolling the casting billet to the middle thickness in two passes, and t...

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Abstract

The invention discloses an aluminum material for producing a capacitor shell from a cast-rolled blank. The aluminum material comprises the following components including, by mass, 0.06%-0.20% of Si, 0.40%-0.65% of Fe, 0.08%-0.20% of Cu, less than or equal to 0.03% of Mn, less than or equal to 0.03% of Zn, less than or equal to 0.03% of Ti, less than or equal to 0.03% of Ni and the balance of Al. A preparation method comprises the steps of raw material casting, first-time rough rolling, first-time heat treatment, intermediate rolling, first-time finish rolling and second-time heat treatment; and homogenizing annealing is carried out at the thickness of 1.5-4.0 mm, segregation of components and structures is eliminated, cubic textures are increased, and annealing is carried out again when a finished product is obtained, so that the number and strength of rolled textures and the cubic textures formed in the rolling process are reasonably matched, eight small lugs with relatively uniform peak heights can be obtained after deep drawing of an aluminum plate, the purpose of reducing the lug rate is achieved, and the deep drawing forming performance of the aluminum material for the capacitor shell is improved.

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 & AuthorityApplications(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