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Preparation method of aluminum alloy material for new energy power battery shells and covers

A technology of aluminum alloy materials and power batteries, which is applied in metal rolling, battery pack parts, rolling force/roll gap control, etc., can solve the problems of overall performance to be improved, and achieve excellent laser welding performance, convenient processing, good quality effect

Inactive Publication Date: 2020-06-23
合肥博康金属技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The aluminum alloy strip produced by it has good deep drawing performance and laser weldability, and

Method used

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  • Preparation method of aluminum alloy material for new energy power battery shells and covers
  • Preparation method of aluminum alloy material for new energy power battery shells and covers
  • Preparation method of aluminum alloy material for new energy power battery shells and covers

Examples

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Example Embodiment

[0038] Example 1

[0039] This embodiment relates to an aluminum alloy material for a new energy power battery shell and cover. The aluminum alloy material is composed of the following components by weight percentage:

[0040] Si: 0.32%, Mg: 0.58%, Sr: 0.20%, Mn: 0.67%, Be: 0.18%, Zr: 0.15%, Sb: 0.12%, Er: 0.10%, Pr: 0.03%, Tb: 0.01%, Dy: 0.04%, B: 0.003%, Ga: 0.001%, and the balance is Al.

[0041] The preparation method of the above-mentioned new energy power battery shell and cover aluminum alloy plate and strip generally follow the following steps:

[0042] Step 1: Take the aluminum ingots, the required aluminum master alloy ingots and the elemental metal and transport them to the smelting furnace, successively perform smelting, refining, slagging, and online degassing to obtain molten metal; in step 1, the refining uses an argon gas furnace Bottom purging refining, the refining temperature is 740℃, the refining time is 25min, and the refining agent selected is potassium fluoroal...

Example Embodiment

[0051] Example 2

[0052] This embodiment relates to an aluminum alloy material for a new energy power battery shell and cover. The aluminum alloy material is composed of the following components by weight percentage:

[0053] Si: 0.36%, Mg: 0.62%, Sr: 0.23%, Mn: 0.72%, Be: 0.21%, Zr: 0.18%, Sb: 0.16%, Er: 0.13%, Pr: 0.05%, Tb: 0.03%, Dy: 0.06%, B: 0.004%, Ga: 0.002%, and the balance is Al.

[0054] The preparation method of the above-mentioned new energy power battery shell and cover aluminum alloy plate and strip generally follow the following steps:

[0055] Step 1: Take the aluminum ingots, the required aluminum master alloy ingots and the elemental metal and transport them to the smelting furnace, successively perform smelting, refining, slagging, and online degassing to obtain molten metal; in step 1, the refining uses an argon gas furnace Bottom purging refining, the refining temperature is 745℃, the refining time is 22min, the refining agent selected is potassium fluoroalumin...

Example Embodiment

[0064] Example 3

[0065] This embodiment relates to an aluminum alloy material for a new energy power battery shell and cover. The aluminum alloy material is composed of the following components by weight percentage:

[0066] Si: 0.41%, Mg: 0.66%, Sr: 0.25%, Mn: 0.78%, Be: 0.24%, Zr: 0.23%, Sb: 0.20%, Er: 0.16%, Pr: 0.06%, Tb: 0.05%, Dy: 0.08%, B: 0.005%, Ga: 0.004%, and the balance is Al.

[0067] The preparation method of the above-mentioned new energy power battery shell and cover aluminum alloy plate and strip generally follow the following steps:

[0068] Step 1: Take the aluminum ingots, the required aluminum master alloy ingots and the elemental metal and transport them to the smelting furnace, successively perform smelting, refining, slagging, and online degassing to obtain molten metal; in step 1, the refining uses an argon gas furnace Bottom purging refining, the refining temperature is 750℃, the refining time is 20min, the refining agent selected is potassium fluoroalumin...

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Abstract

The invention discloses a preparation method of an aluminum alloy material for new energy power battery shells and covers, and relates to the technical field of new energy batteries. The preparation method comprises the following steps of 1) smelting; 2) refining, slagging off and online degassing; 3) semi-continuous casting; 4) sawing, milling and homogenizing; 5) rolling; 6) annealing; and 7) cleaning, finishing and straightening. The aluminum alloy for new energy power battery shells and covers has superior comprehensive performance. Through overall improvement and optimization of the aluminum alloy composition, content and preparation process, the application performance of produced new energy power battery shell and cover products is improved remarkably; substantive breakthrough is particularly achieved on the aspects of tensile strength, specified non-proportional extension strength, percentage elongation after fracture, stability, impact resistance and welding performance; the application occasion and field are wide; and the urgent demand of the new energy market for high-performance power battery cover and shell products can be met greatly.

Description

technical field [0001] The invention relates to the technical field of new energy batteries, in particular to a method for preparing an aluminum alloy material for a new energy power battery case and cover. Background technique [0002] With the rapid development of new energy technology, new energy electric vehicles have been widely used. They have excellent characteristics such as no pollution, low noise, and no exhaust pollution. They are very beneficial to environmental protection and air cleanliness. Almost It is "zero pollution", and electric vehicles have no noise generated by internal combustion engines, and cause little harm to the human body's hearing, nerves, cardiovascular, digestion, endocrine, and immune systems. In addition, electric-powered vehicles have high energy efficiency, especially in cities. , the car stops and goes, and the driving speed is not high, so new energy vehicles are more suitable. In order to achieve the above effects, the on-board power ...

Claims

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Application Information

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IPC IPC(8): C22C21/00C22C1/03C22C1/06B22D11/00C22F1/04C21D9/00C21D9/52H01M2/10B21B3/00B21B1/46B21B37/74B21B37/58
CPCB21B1/466B21B3/00B21B37/58B21B37/74B21B2003/001B21B2201/06B22D11/003C21D9/0081C21D9/52C22C1/026C22C1/03C22C1/06C22C21/00C22F1/04H01M50/20Y02E60/10
Inventor 高行江孙庆成白志普
Owner 合肥博康金属技术有限公司
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