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Aluminum alloy for new energy automobile battery case and production process thereof

A new energy vehicle and production process technology, applied in the field of metallurgy, can solve problems such as inability to meet performance requirements at the same time, and achieve the effect of meeting performance requirements, uniform metallographic structure, and refined grains

Active Publication Date: 2020-02-28
山东创新精密科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the current market is to provide various types of aluminum alloy materials of the 6xxx series, all of which cannot meet the above performance requirements at the same time.

Method used

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  • Aluminum alloy for new energy automobile battery case and production process thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] An aluminum alloy for a new energy vehicle battery case. According to the mass percentage, the element composition of the aluminum alloy product is: Zn: 3.4; Mg: 2.3; Cu: 1.7; Fe: 0.3; Mn: 0.1; Si: 0.1; Cr: 0.15 ; Ti: 0.12; the balance is Al and unavoidable impurities.

[0030] The elemental composition of the aluminum alloy also includes 0.4% of Zr elements and 0.15% of Re elements, and the Re elements include La, Pr, and Nd.

[0031] The mass ratio of La, Pr, and Nd in the Re element is 4:2:3.

[0032] The production process of this type of aluminum alloy for the battery case of new energy vehicles includes the following steps:

[0033] (1) Calculate the quality of each raw material according to the element formula, add electrolytic aluminum liquid to the furnace, control the temperature of the aluminum liquid to 725°C, and continue to add elemental metal and intermediate alloy to the aluminum liquid;

[0034] (2) Add refining agent to the molten aluminum according ...

Embodiment 2

[0045] An aluminum alloy for a new energy vehicle battery case. According to the mass percentage, the element composition of the aluminum alloy product is: Zn: 5.1; Mg: 2.7; Cu: 1.9; Fe: 0.8; Mn: 0.4; Si: 0.3; Cr: 0.26 ; Ti: 0.15; the balance is Al and unavoidable impurities.

[0046] The elemental composition of the aluminum alloy also includes 0.3% of Zr elements and 0.16% of Re elements, and the Re elements include La, Pr, and Nd.

[0047] The mass ratio of La, Pr, and Nd in the Re element is 4:2:3.

[0048] The production process of this type of aluminum alloy for the battery case of new energy vehicles includes the following steps:

[0049] (1) Calculate the quality of each raw material according to the element formula, add electrolytic aluminum liquid to the furnace, control the temperature of the aluminum liquid to 745°C, and continue to add elemental metal and intermediate alloy to the aluminum liquid;

[0050] (2) Add refining agent to the molten aluminum according to...

Embodiment 3

[0061] An aluminum alloy for a new energy vehicle battery case. According to the mass percentage, the element composition of the aluminum alloy product is: Zn: 3.9; Mg: 2.5; Cu: 1.8; Fe: 0.6; Mn: 0.3; Si: 0.2; Cr: 0.21 ; Ti: 0.14; the balance is Al and unavoidable impurities.

[0062] The elemental composition of the aluminum alloy also includes 0.35% of Zr elements and 0.18% of Re elements, and the Re elements include La, Pr, and Nd.

[0063] The mass ratio of La, Pr, and Nd in the Re element is 4:2:3.

[0064] The production process of this type of aluminum alloy for the battery case of new energy vehicles includes the following steps:

[0065] (1) Calculate the quality of each raw material according to the element formula, add electrolytic aluminum liquid into the furnace, control the temperature of the aluminum liquid to 735°C, and continue to add elemental metal and intermediate alloy to the aluminum liquid;

[0066] (2) Add refining agent to the molten aluminum accordi...

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Abstract

The invention relates to the metallurgy field, in particular to an aluminum alloy for a new energy automobile battery case and a production process thereof. By weight percent, the aluminum alloy product consists of elements of 3.4-5.1 of Zn, 2.3-2.7 of Mg, 1.7-1.9 of Cu, 0.3-0.8 of Fe, 0.1-0.4 of Mn, 0.1-0.3 of Si, 0.15-0.26 of Cr, 0.12-0.15 of Ti, the balance Al and inevitable impurities. The preparation process includes multiple procedures of refining, filtering, casting, calendaring, homogenization treatment, artificial aging, hot static pressure treatment and the like. The aluminum alloy sheet produced by using the production process is characterized by being high in tensile strength and yield strength, large in hardness and excellent in fatigue resistance, and is suitable for manufacture of the new energy automobile battery case.

Description

technical field [0001] The invention relates to the field of metallurgy, in particular to an aluminum alloy for a battery case of a new energy vehicle and a production process thereof. Background technique [0002] New energy vehicles refer to vehicles that use unconventional vehicle fuels as power sources, integrate advanced technologies in vehicle power control and drive, and form vehicles with advanced technical principles, new technologies, and new structures. At present, the new energy vehicles in the market are mainly electric vehicles. Electric vehicles use electricity as the power source and use electric motors to drive vehicles to rotate. In order to improve safety and battery life, existing electric vehicles mainly use lithium battery packs as power storage components. [0003] An important factor affecting the endurance performance of electric vehicles is the body mass. The lower the body mass, the longer the mileage supported by the battery on the basis of the s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/10C22C1/03C22C1/06C22F1/053
CPCC22C1/026C22C1/03C22C1/06C22C21/10C22F1/002C22F1/053
Inventor 崔立新赵晓光焦培勇韩连涛张伟许庆斌成凯李明壮王志伟
Owner 山东创新精密科技有限公司
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