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Aluminum alloy material for new energy power battery shells and covers and application of aluminum alloy material

A technology of aluminum alloy materials and power batteries, which is applied in the direction of battery box/case material, battery pack parts, battery box/coating, etc., can solve the problems such as the overall performance needs to be improved, achieve low incidence of abnormal weld pools, and facilitate processing , the effect of good appearance quality

Inactive Publication Date: 2019-02-22
合肥天沃能源科技有限公司
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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 can better solve the above-mentioned problems, but its overall performance still needs to be improved

Method used

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  • Aluminum alloy material for new energy power battery shells and covers and application of aluminum alloy material
  • Aluminum alloy material for new energy power battery shells and covers and application of aluminum alloy material
  • Aluminum alloy material for new energy power battery shells and covers and application of aluminum alloy material

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Embodiment 1

[0044] This embodiment relates to an aluminum alloy material for a new energy power battery case and cover. The aluminum alloy material is composed of the following components by weight percentage:

[0045] 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.

[0046] The preparation method of the above-mentioned new energy power battery shell and cover aluminum alloy plate and strip is generally carried out according to the following steps:

[0047] Step 1: Take the aluminum ingot, the required aluminum intermediate alloy ingot and the metal element and transport them to the smelting furnace, and carry out smelting, refining, slag removal, online degassing successively to obtain the molten metal; in step 1, the refining uses an argon furnace Bottom purge refining, the refining temperature is 740°C, and the refining time is 25 minutes. The refining agent selected ...

Embodiment 2

[0057] This embodiment relates to an aluminum alloy material for a new energy power battery case and cover. The aluminum alloy material is composed of the following components by weight percentage:

[0058] 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.

[0059] The preparation method of the above-mentioned new energy power battery shell and cover aluminum alloy plate and strip is generally carried out according to the following steps:

[0060] Step 1: Take the aluminum ingot, the required aluminum intermediate alloy ingot and the metal element and transport them to the smelting furnace, and carry out smelting, refining, slag removal, online degassing successively to obtain the molten metal; in step 1, the refining uses an argon furnace Bottom purge refining, the refining temperature is 745°C, and the refining time is 22 minutes. The refining agent selected ...

Embodiment 3

[0070] This embodiment relates to an aluminum alloy material for a new energy power battery case and cover. The aluminum alloy material is composed of the following components by weight percentage:

[0071] 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.

[0072] The preparation method of the above-mentioned new energy power battery shell and cover aluminum alloy plate and strip is generally carried out according to the following steps:

[0073] Step 1: Take the aluminum ingot, the required aluminum intermediate alloy ingot and the metal element and transport them to the smelting furnace, and carry out smelting, refining, slag removal, online degassing successively to obtain the molten metal; in step 1, the refining uses an argon furnace Bottom purge refining, the refining temperature is 750°C, and the refining time is 20 minutes. The refining agent selected ...

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Abstract

The invention discloses an aluminum alloy material for new energy power battery shells and covers and application of the aluminum alloy material, and relates to the technical field of new energy batteries. The aluminum alloy material is composed of following element components including Si, Mg, Sr, Mn, Be, Zr, Sb, Er, Pr, Tb, Dy, B, Ga and Al. An aluminum alloy for the new energy power battery shells and covers is excellent in comprehensive performance; the components, content and preparation process of the aluminum alloy are overall improved and optimized, the application performance of prepared new energy power battery shell and cover products is improved remarkably, substantive breakthroughs are achieved especially on the index aspects of tensile strength, prescribed non-proportional extension strength, percentage elongation after fracture, stability, punching performance and welding performance, and the application occasion and field are wide; and the active demands of the new energy market for high-performance power battery cover and shell products can be greatly met.

Description

technical field [0001] The invention relates to the technical field of new energy batteries, in particular to an aluminum alloy material for a new energy power battery case and cover and an application thereof. 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 po...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/00C22C1/03C22F1/04H01M2/02H01M50/116
CPCC22C1/026C22C1/03C22C21/00C22F1/04H01M50/116Y02E60/10
Inventor 魏芳芳
Owner 合肥天沃能源科技有限公司
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