Aluminum Case For Automotive Battery
Products Description
This series of Aluminum Case for automotive battery is positioned as automotive-grade lithium battery structural components, serving the following customers:
New energy vehicle power battery manufacturers
Energy storage system (ESS) cell and module integrators
Engineering R&D departments and structural design teams
Overseas OEM/ODM professional buyers
We focus not only on "whether it can be manufactured," but also on structural reliability, batch consistency, long-term service stability, and system-level adaptability.
Material Selection Logic
| AL1060 (Pure Aluminum) | As a preferred material for basic applications, it has an aluminum content of≥99.6%, excellent thermal conductivity (201W/(m・K)) and formability, and excellent corrosion resistance after surface treatment. Suitable for cost-sensitive energy storage batteries or entry-level new energy vehicles with high heat dissipation requirements, its thin-walled structure design achieves extreme lightweighting, reducing weight by more than 30% compared to traditional steel casings. |
| AL3003-H14 (Aluminum-Manganese Alloy) | Our core recommended grade, containing 1.0-1.5% manganese. After H14 heat treatment (solution treatment + cold working), it achieves a tensile strength of 120MPa and an elongation of≥10%, while also possessing excellent resistance to stress corrosion and processing stability. Its greatest advantage lies in its "balanced performance"-its formability adapts to complex shell structure stamping, and its corrosion resistance meets the long-term outdoor use requirements of automotive chassis, making it the mainstream choice for passenger vehicle power battery shells. It has passed the 3000-hour salt spray test certification of leading domestic automakers. |
| AL5052 (Aluminum-Magnesium Alloy) | Contains 2.2-2.8% magnesium, with higher strength than the 3003 series (tensile strength 170MPa), and possesses good fatigue resistance and weldability. Suitable for commercial vehicles and special vehicles with high shell strength requirements, or scenarios requiring frequent disassembly and maintenance, its impact resistance effectively buffers vibrations and shocks during vehicle operation, protecting internal cells from damage. |
| AL6061 (Aluminum-Magnesium-Silicon Alloy) | A high-performance material with a tensile strength reaching 276MPa after T6 heat treatment. It possesses excellent comprehensive mechanical properties and corrosion resistance, and supports complex surface treatments such as anodizing. It is suitable for high-end new energy vehicles, high-energy-density battery modules, or scenarios with strict requirements for shell precision (such as module assembly with gaps ≤0.1mm). It can achieve the ultimate balance of "high strength + lightweight" through structural optimization. |
Integrated Structural Engineering: A Perfect Fusion of Safety, Heat Dissipation, and Lightweight Design
Structural Rigidity Design
Through advanced CAE simulation analysis, we optimize the Aluminum Alloy Prismatic Battery Case's wall thickness, reinforcing rib layout, and corner curvature to ensure structural integrity under extreme conditions such as compression, vibration, and drops, effectively protecting the internal battery cells from physical damage.
Passive Thermal Management
Aluminum alloy is an excellent thermal conductor. Our lithium cell Aluminum shell design maximizes the contact area with the battery cells, forming a highly efficient "heat dissipation fin." This quickly and evenly conducts the heat generated by the battery cells to the entire casing surface, and then efficiently dissipates the heat through natural convection or in combination with a liquid cooling plate, maintaining the battery cells within their optimal operating temperature range, slowing down degradation, and extending lifespan.
High-level sealing protection
We employ laser welding or friction stir welding (FSW) technology to achieve a seamless connection between the cover and the housing. Combined with precisely designed sealing grooves and fluororubber sealing rings, we can easily achieve IP67 or even IP68 protection levels, impervious to dust, moisture, and even brief immersion.
Ultimate lightweight design
While ensuring safety, through material selection and structural optimization, our aluminum alloy shell can reduce weight by more than 40% compared to traditional steel shells. This directly translates into longer driving range and better handling performance for new energy vehicles.
Detailed Showcase: Witnessing Superior Quality
Edge Treatment
All exposed edges are rounded or chamfered, burr-free, ensuring operational safety and smooth assembly.
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Flatness Control
Mounting and sealing surfaces undergo precision machining or calibration, with flatness controlled to extremely high standards to ensure reliable fit with the cooling system or top and bottom covers.
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Identification and Traceability
Each prismatic cell Aluminum shell can be laser-marked with a unique code according to customer requirements, enabling full lifecycle traceability.
03
Cleanliness Guarantee
Final cleaning and packaging are performed in a cleanroom to prevent metal shavings, oil stains, and other residues from affecting the cleanliness of the battery's internal lithium cell battery Aluminum shells.
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