3005 aluminum alloy sheet is widely used in battery enclosures due to its excellent corrosion resistance, good weldability, moderate strength, and formability, providing lightweight and high safety protection.
3005 aluminum alloy is a common aluminum material mainly composed of aluminum and a small amount of manganese (Mn). It has excellent corrosion resistance, good weldability, and moderate strength. It is increasingly used in battery enclosure manufacturing, especially in applications that require high protection, lightweight, and durability.
Why Choose 3005 Aluminum Sheet for Battery Enclosures?
Excellent Corrosion Resistance
One of the main characteristics of 3005 aluminum alloy is its outstanding corrosion resistance, which is particularly important for battery enclosures. Battery enclosures need to withstand the invasion of corrosive substances in the environment, such as moisture, oxygen, and acids or alkalis, especially for batteries in mobile devices, power tools, and electric vehicles. The corrosion resistance of the outer shell material directly affects the battery's service life and safety. The manganese element in 3005 aluminum alloy effectively enhances its anti-corrosion performance, ensuring stable performance even in harsh environments such as high humidity and high temperatures.
Good Weldability
The manufacturing process of battery enclosures often requires welding processes for sealing and assembly. 3005 aluminum alloy has good welding performance and can adapt to different welding methods (such as TIG welding, MIG welding, etc.), ensuring the firmness and reliability of welded joints. This makes 3005 aluminum sheet an ideal material for battery enclosure manufacturing, ensuring the tight closure of enclosure components and preventing internal battery components from being exposed to external environments.
Moderate Strength and Lightweight
Although 3005 aluminum alloy has moderate strength, it still offers significant lightweight advantages compared to other metal materials, such as steel. In battery enclosure applications, lightweight aluminum alloys can effectively reduce the overall weight of devices, especially for portable devices and electric vehicles, which require both high strength and low weight. Although the strength of 3005 aluminum alloy is slightly lower than that of some other aluminum alloys, it is still strong enough to withstand the external forces acting on the battery enclosure and ensure structural stability.
Excellent Formability
3005 aluminum alloy has good formability and can easily be processed into aluminum sheets of various shapes to meet the diverse design requirements of battery enclosures. Whether cylindrical, square, or other complex shapes, 3005 aluminum alloy sheet can be successfully formed to ensure that the appearance and structure of the battery enclosure meet design requirements. Additionally, its processability can further reduce production costs and improve manufacturing efficiency.
Excellent Surface Treatment Performance
The surface of 3005 aluminum alloy sheet is easy to treat, such as anodizing or spraying, which further enhances its corrosion resistance and appearance quality. Through surface treatment, the aluminum sheet not only improves its aesthetic appearance but also effectively prevents external environmental damage to the battery enclosure, ensuring the long-term safe use of the battery.
Suitable for High-Temperature and High-Humidity Environments
Since battery enclosures are often exposed to various environmental conditions, particularly high-temperature and high-humidity environments, 3005 aluminum alloy performs well under these conditions due to its stable properties. Its resistance to high temperatures and humidity can effectively prevent the battery enclosure from deforming or corroding due to environmental changes, thus protecting the internal battery from damage.
Sealing and Safety of Battery Enclosures
The sealing of the battery enclosure is critical to the safety of the battery. 3005 aluminum alloy, with its good formability and weldability, can easily produce battery enclosures with excellent sealing properties, preventing the leakage of internal electrolytes or short circuits. Furthermore, the impact resistance and toughness of aluminum alloys can effectively enhance the safety of the battery enclosure, preventing breakage or damage under external forces.
Specification of aluminum plate for power battery shells
| Alloy | Temper | Size specification/mm | Application | |||
| Thickness | Type | Width | length | |||
| 3005 | O | 0.60-2.00 | plate | 100.0-2000.0 | 1000-3 000 | power battery shells |
| strip | ||||||
Chemical composition of aluminum plate for power battery shells
| Alloy | 3005 |
| Si | 0.6 |
| Fe | 0.7 |
| Cu | 0.3 |
| Mn | 1.0-1.5 |
| Mg | 0.2-0.6 |
| Cr | 0.1 |
| Ni | - |
| Zn | 0.25 |
| Ti | 0.1 |
| Al | Remainder |
3005 aluminum alloy sheet, as a material for battery enclosures, has become the ideal choice in battery enclosure manufacturing due to its excellent corrosion resistance, good weldability, moderate strength, lightweight, and good machinability. Whether in portable electronic devices, energy storage batteries, electric vehicles, or other fields that require battery protection, 3005 aluminum alloy can effectively protect the battery from external environmental impacts, extend the battery's service life, and ensure its safety.