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What is aluminum sheet for power battery shell

Aluminum sheet for power battery shell refers to the aluminum sheet used to wrap the power battery, which is usually used in electric vehicles and hybrid vehicles; these aluminum sheets usually use specific aluminum alloys, such as 3003 aluminum alloy, because they have some key characteristics and are very suitable for use as power battery shells.

Aluminum sheet for power battery shell

Parameters of aluminum sheet for power battery shell

Chemical Composition Of 3003 aluminum plate

Chemical Composition Of 3003 Aluminum Sheet
Element	Aluminium	Manganese	Copper	Silicon	Iron	Zinc	Others (each)	Others (total)
%	Remainder	1.0 – 1.5	0.05 – 0.20	0.6 max	0.7 max	0.10 max	0.05 max	0.15 max

Mechanical properties of 3003 aluminum plate

Specified Minimum Mechanical Properties
Temper	0.2% Proof Stress, MPa min †	Tensile Strength, MPa	Elongation % min ‡
O (annealed)	35	95 – 130	14 – 21
H12	80	115 – 160	3 – 8
H14	115	135 – 180	1 – 8
H16	145	165 – 205	1 – 4
H18	165	185 min	1 – 4

Advantages of aluminum sheet for power battery shell

It is common practice to use aluminum sheet for power battery shells, especially for battery packs in electric vehicles (EV) and hybrid electric vehicles (HEV). Aluminum sheet as a battery shell material has the following advantages:

Lightweight: Aluminum has a lower density and is lighter than other metals such as steel, which helps to reduce the overall vehicle weight, thereby improving energy efficiency and endurance.
Good thermal conductivity: Aluminum has good thermal conductivity, which can help the battery pack dissipate heat and maintain the battery in a suitable operating temperature range, which is crucial for the performance and life of the battery.
Corrosion resistance: A dense oxide film can naturally form on the surface of aluminum, which can effectively prevent further oxidation and corrosion and protect the battery from the external environment.
Easy to process and shape: Aluminum is easy to process by stamping, stretching and other processes, and different shapes of battery shells can be manufactured according to specific design requirements.
Environmentally friendly and recyclable: Aluminum is a recyclable material. When the battery reaches the end of its service life, its shell can be recycled and reused, reducing the impact on the environment.

3003 aluminum plate with bluefilm

Of course, there are some challenges in using aluminum sheets, such as cost issues and slightly lower strength under certain conditions compared to other materials (such as steel). However, these problems can be improved through alloying and special treatment methods.

In practical applications, the design of the battery casing also needs to consider the requirements of waterproof and dustproof level, mechanical strength, safety and other aspects. Therefore, manufacturers usually choose the most suitable materials and technical solutions according to specific usage scenarios and needs.

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Latest Comments

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