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Aluminum-base material used for power battery cover body and method used for manufacturing power battery cover body

A technology for power batteries and aluminum-based materials, applied in the field of aluminum-based materials, can solve the problems of increasing the cruising range of electric vehicles, increasing the quality of power batteries, increasing the production process, etc., to achieve light weight, improve strength and performance, and reduce costs. Effect

Inactive Publication Date: 2019-05-24
镇江龙源铝业有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The density of the stainless steel material is about three times that of the aluminum alloy material. The use of a stainless steel cover will increase the quality of the power battery and indirectly increase the quality of the vehicle, which is not conducive to increasing the mileage of the electric vehicle; and the stainless steel material is too hard to be stretched at one time. Forming the cover body requires laser welding on both sides of the cover body, which increases the production process

Method used

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  • Aluminum-base material used for power battery cover body and method used for manufacturing power battery cover body

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Embodiment Construction

[0037] The present invention is described in further detail now in conjunction with accompanying drawing. These drawings are all simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, so they only show the configurations related to the present invention.

[0038] Such as figure 1 As shown, an aluminum-based material for a power battery cover, which contains 0.18-0.19% Si by mass percentage, 0.54-0.60% Fe, 0.080%-0.095% Cu, 1.00-1.10% Mn, 0.002~0.005% of Mg, 0.0006~0.0009% of Cr, 0.006~0.007% of Ni, 0.01~0.02% of Zn, 0.03~0.04% of Ti, the total content of other impurities does not exceed 0.15%, and the single type of The content of impurities is not more than 0.05%, and the balance is Al.

[0039] Specifically, it contains Si with a mass percentage of 0.180-0.189%.

[0040] Specifically, it contains Fe with a mass percentage of 0.546-0.591%.

[0041] Specifically, it contains Cu with a mass percentage of 0.08...

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Abstract

The invention relates to an aluminum-base material used for a power battery cover body. The material is characterized by comprising, by mass percent, 0.18 to 0.19% of Si, 0.54 to 0.60% of Fe, 0.080% to 0.095% of Cu, 1.00 to 1.10% of Mn, 0.002 to 0.005% of Mg, 0.0006 to 0.0009% of Cr, 0.006 to 0.007% of Ni, 0.01 to 0.02% of Zn, 0.03 to 0.04% of Ti, not larger than 0.15% of the total amount of otherimpurities, not larger than 0.05% of the content of single impurities and the balance Al. The process is simple, the cost is reduced, the mass is small, the density is small, heat and corrosion are resisted, the automaton degree is good, control is facilitated and the yield is high.

Description

technical field [0001] The invention relates to an aluminum-based material, in particular to an aluminum-based material used for a power battery cover and a method for manufacturing the power battery cover. Background technique [0002] The battery cover is an important part of the power battery. In the early stage of power battery development, its raw materials are mainly made of stainless steel. Stainless steel has the advantages of hard material, no rust and easy welding, and is the material used in traditional battery packaging. As the cover material for automotive power battery packaging, stainless steel also has its own defects. The density of the stainless steel material is about three times that of the aluminum alloy material. The use of a stainless steel cover will increase the quality of the power battery and indirectly increase the quality of the vehicle, which is not conducive to increasing the mileage of the electric vehicle; and the stainless steel material is...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/18C22C21/16C22C21/14C22C1/02C22C1/06B23P15/00
Inventor 董福伟薛卫龙刘灿根
Owner 镇江龙源铝业有限公司
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