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Production method of aluminum and aluminum alloy plates and strips for new energy power battery case

An aluminum alloy strip and power battery technology, which is applied in the field of aluminum alloy casting, can solve the problems of high production cost, high rate of punching and drawing of finished products, and difficulty in meeting the requirements, so as to achieve the advantages of improving plasticity and increasing tensile strength. Effect

Active Publication Date: 2020-04-28
广西润泰铝业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are no reports in the industry on the preparation of aluminum and aluminum alloy plates and strips for "H12" and "H14" state power battery shells by using 3003 alloys
At the same time, the above technology also has certain defects: the production of aluminum and aluminum alloy plates and strips for 3003 alloy power battery cases by hot rolling technology is complicated, and the production cost is high; the production of aluminum and aluminum alloy for 3003 alloy power battery cases by casting and rolling technology Plates and strips have strict requirements on the casting and rolling production process, and the punching and stretching forming of the finished product has a high ear-making rate, which is difficult to meet the large-scale battery case production process

Method used

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  • Production method of aluminum and aluminum alloy plates and strips for new energy power battery case
  • Production method of aluminum and aluminum alloy plates and strips for new energy power battery case
  • Production method of aluminum and aluminum alloy plates and strips for new energy power battery case

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] A 1.0mm thick 3003 alloy "O" state power battery casing aluminum and aluminum alloy plate and strip preparation method.

[0042] S1. The chemical composition of the optimized 3003 alloy battery case aluminum strip, in terms of mass percentage: silicon 0.1%, iron 0.35%, copper 0.15%, manganese 1.05%, titanium 0.025%, and the balance is Al.

[0043] Put 70wt% electrolytic aluminum liquid, 30wt% aluminum ingot with aluminum content ≥99.7wt%, and various alloy additives into the melting furnace for melting, slag removal, adjustment of alloy chemical composition, refining, and standing to prepare aluminum melt , the aluminum melt treated in the smelting furnace is degassed by online SNIF and filtered online, the hydrogen content of the melt is 0.010ml / 100g Al, and the hydrogen content of alkali metal Na is 1ppm.

[0044] During refining, one end of the refining equipment is connected to the intake pipe, and the other end is inserted into the aluminum melt. The mixed gas of a...

Embodiment 2

[0053] A 1.2mm thick 3003 alloy "H12" and "H14" state power battery casing aluminum and aluminum alloy plate, strip preparation method.

[0054] S1. The chemical composition of the optimized aluminum strip for 3003 alloy battery case, the mass percentage of each component is: silicon 0.1%, iron 0.35%, copper 0.15%, manganese 1.00%, titanium 0.025%, and the balance is Al.

[0055] Put 70wt% electrolytic aluminum liquid, 30wt% aluminum ingot with aluminum content ≥ 99.7wt%, and various alloy additives into the melting furnace for melting, control the furnace temperature at 735~745°C, remove slag, adjust the chemical composition of the alloy , Refining, standing still to prepare aluminum melt, the aluminum melt treated in the smelting furnace is degassed by online SNIF and filtered online, the hydrogen content of the aluminum melt is controlled to 0.010ml / 100g Al, and the alkali metal Na content is 1ppm.

[0056] S2. During continuous rolling, the rolling distribution scheme is 1...

Embodiment 3

[0064] A 2.0mm thick 3003 alloy "O" state power battery casing aluminum and aluminum alloy plate, strip production method.

[0065] S1. The chemical composition of the optimized aluminum strip for 3003 alloy battery case, the mass percentage of each component is: silicon 0.09%, iron 0.37%, copper 0.14%, manganese 1.08%, titanium 0.025%, and the balance is Al.

[0066] Put 65wt% electrolytic aluminum liquid, 35wt% aluminum ingots with an aluminum content ≥ 99.7 wt%, and various alloy additives into the melting furnace for melting, control the furnace temperature at 735~745°C, remove slag, adjust the chemical composition of the alloy , Refining, standing still to prepare aluminum melt, the aluminum melt treated in the smelting furnace is degassed by online SNIF and filtered online, the hydrogen content in the aluminum melt is controlled to 0.010ml / 100g Al, and the alkali metal Na content is 1ppm.

[0067] During refining, one end of the refining equipment is connected to the int...

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Abstract

The invention provides a production method of aluminum and aluminum alloy plates and strips for a new energy power battery case. The method comprises the following steps of aluminum melt preparing, continuous casting and rolling, homogenizing annealing, cold rolling, intermediate annealing or final annealing. The method can be used for producing 3003 alloy plate and strip products in the states of"O", "H12" and "H14" for the new energy power battery case, and the strength and the yield ratio of material of the obtained products can be effectively enhanced.

Description

technical field [0001] The invention relates to the technical field of aluminum alloy casting, in particular to a production method of aluminum and aluminum alloy plates and strips for new energy power battery shells. Background technique [0002] With the development of new energy power battery technology, whether it is the demand for mileage of electric vehicles or the requirements of the national new energy subsidy policy, higher requirements are placed on the specific energy of new energy power batteries. Without changing the external size of the single battery, increasing the proportion of effective material inside is one of the most direct and effective ways to increase the specific energy of the battery. This requires that the wall thickness of the shell be reduced to increase the internal space, and the strength and rigidity of the material need to be increased to prevent deformation of the shell due to thinning. At present, 3003 alloy is widely used in the market t...

Claims

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Application Information

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IPC IPC(8): C22C21/00C22C1/02C22F1/04C21D9/52B22D11/00H01M2/02B21B1/46B21B3/00B21B27/02B21B37/58B21B37/74B21B45/02H01M50/116
CPCC22C21/00C22C1/026C22F1/04C21D9/52B22D11/003B21B1/463B21B37/74B21B45/0218B21B45/0251B21B27/02B21B37/58B21B3/00B21B2201/06B21B2267/10B21B2003/001H01M50/116Y02E60/10
Inventor 邢俊杰朱勇姜小龙陈君赵阳磊庞富伟
Owner 广西润泰铝业有限公司
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