5 Key Characteristics of Aluminum Plates for Lithium Battery Aluminum Cases
May 04, 2026
Lightweight characteristics
The lithium battery pack itself has a large weight, and the core requirement for lightweight design of Lithium battery aluminum case materials directly affects the energy consumption and range performance of the battery system and even the entire vehicle. The density of aluminum plate is about 2.7 grams per cubic centimeter, which is only one-third of that of steel. Using aluminum plate to make lithium battery shells can significantly reduce the overall weight of the battery pack, thereby effectively improving the range of new energy vehicles.
In the design of new energy vehicles, the weight control of Automotive battery aluminum cases is directly related to energy efficiency, and the lightweight advantage of aluminum plates cannot be replaced, becoming the basic support for extending range and optimizing vehicle performance.
High strength and high rigidity
Lithium battery aluminum case materials are required to have sufficient strength and rigidity to provide reliable protection for internal battery modules, as they need to withstand complex working conditions such as vibration, impact, and potential collisions for a long time during vehicle operation.
By optimizing the alloy composition and heat treatment process (such as T6 heat treatment), the structural strength of aluminum plates can be significantly improved. Among them, 6061 aluminum alloy, Aluminum case for new energy carriers, which has undergone T6 heat treatment, has excellent deformation and impact resistance, can effectively resist external mechanical effects, prevent cell damage and deformation, and effectively build a safety protection barrier for battery systems.
Excellent thermal conductivity
During the charging and discharging process of lithium batteries, heat is continuously generated. If the heat accumulates and cannot be dissipated in a timely manner, it can lead to battery performance degradation, shortened lifespan, and in severe cases, the risk of thermal runaway. Aluminum plate has excellent thermal conductivity and is an ideal heat dissipation material for LiFePo4 prismatic battery aluminum cells. It can quickly and evenly transfer the heat generated by the battery cell to the surface of the shell, and then work together with cooling systems such as liquid cooling plates to achieve efficient heat dissipation. The battery temperature is controlled within a safe operating range, thereby ensuring the cycle life and safety of the battery.
Super corrosion resistance and excellent processability
New energy aluminum battery cases need to adapt to diverse and complex operating environments, often facing corrosive scenarios such as humidity and salt spray. The aluminum plate surface can naturally form a dense oxide layer, which can effectively resist environmental erosion and ensure the structural integrity and operational reliability of the battery shell throughout its entire life cycle. Among them, 5052 aluminum alloy is commonly used for the lower shell components of batteries exposed to harsh environments due to its outstanding corrosion resistance.
At the same time, aluminum plates have excellent formability and weldability, making them easy to process into complex shapes through stamping, bending, and other processes. They are highly compatible with advanced technologies such as friction stir welding and can form high-strength sealed welds, ensuring the sealing performance of the Aluminum battery casing, preventing foreign substances from infiltrating, and providing convenience for large-scale production.
Contact us
If you have customization, procurement, or technical consulting needs for aluminum plates for Lithium battery aluminum cases, please feel free to contact us at any time. We will provide tailored aluminum plate solutions and professional technical support based on your actual application scenario, to assist in the efficient progress of your project.
