Preparation method of 5083-O-state battery case side plate for new energy automobile

Abstract

The invention belongs to the technical field of aluminum alloy, and particularly discloses a preparation method of a 5083-O-state battery case side plate for a new energy automobile. The method comprises the following steps of adding prepared raw materials into a smelting furnace for smelting, and then conducting standing refining, slagging-off, degassing and filtering to obtain molten aluminum; casting the molten aluminum into an aluminum alloy cast ingot; conducting homogenizing heat treatment on the aluminum alloy cast ingot; after preheating, conducting hot rolling to obtain a hot-rolled blank with the thickness of 6.0 mm, wherein the hot rolling final temperature is 310 DEG C or above; and conducting cold rolling to obtain an intermediate cold-rolled coiled material with the thickness of 2.5 mm, conducting intermediate annealing, conducting cold rolling again to obtain an aluminum alloy coiled material with the thickness of 1.2 mm, conducting stretch bending alkali washing, water washing and drying on the aluminum alloy coiled material, conducting finished product annealing, conducting plate shape withdrawal and straightening, and conducting transverse shearing and slitting to obtain the side plate. The tensile strength of the prepared 5083 material can reach 280 MPa or above, the surface dyne value is 60 dyne or above, and meanwhile, good forming performance and good corrosion resistance are achieved.

Description

technical field [0001] The invention belongs to the technical field of aluminum alloy production, in particular to a method for preparing a side plate of a 5083-O state battery case for a new energy vehicle. Background technique [0002] The battery pack is the core energy source of new energy vehicles, which provides driving power for the whole vehicle. It mainly constitutes the main body of the battery pack through the envelope of the shell. The battery pack mainly includes batteries, modules, casings and electrical systems. [0003] The battery pack shell is referred to as the battery shell, which is the carrier of the battery module and plays a key role in the safe operation and protection of the battery. Life and shell anti-collision considerations. [0004] Traditional new energy battery shell side panels are made of steel. However, with the development of environmental protection and lightweight of new energy vehicles, steel materials are gradually withdrawn due to ...

AI Technical Summary

Problems solved by technology

[0005] The early aluminum alloy battery shell side panels were mainly made of 3003 aluminum alloy 0-state materials, but the tensile strength of 3003-O-state materials is about 115MPa, and the yield strength is about 60MPa, which is quite different from conventional steel materials.

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