Lithium Prismatic Cells Aluminum Shell
In the context of the rapid development of the new energy industry, the safety, energy density, and durability of power batteries have become the core of industry attention. Our Lithium Prismatic Cells Aluminum Shell series products, based on high-purity aluminum alloy and combined with precision forming technology, provide stable and reliable shell solutions for various lithium batteries (especially automotive power batteries). Among them, the Aluminum LTO Prismatic Battery Cell For EV specially designed for electric vehicles balances lightweight and impact resistance through structural optimization and material innovation, adapting to the battery PACK integration needs of current mainstream EV models. Whether it is large-capacity battery packs in the energy storage field or small lithium batteries in consumer electronics, our Aluminum Battery Case products can ensure the long-term stable operation of batteries with excellent sealing and thermal conductivity, helping customers enhance the competitiveness of end products.
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Product Introduction
Products Description
Our Lithium Prismatic Cells Aluminum Shell - using trivalent chromium passivation + electrophoretic coating process, with a coating thickness of 5-8μm, and the salt spray test can reach more than 1000 hours, which can effectively resist rain and dust erosion during vehicle driving and avoid shell oxidation and rust. At the same time, the bottom of the shell is designed with a reinforcing rib structure, which increases the extrusion resistance by 30%.
During vehicle bumps or slight collisions, it can protect the internal cells from damage. In addition, all Aluminum Battery Case have passed IP67 waterproof certification, meeting the usage needs in complex environments such as outdoor energy storage and electric vehicles.
Product Features
High-quality Material, Stable Performance: All New Energy Aluminum Battery Cases are made of 6061 or 6063 aluminum alloy that meets GB/T 3190 standards, with a material purity of ≥99.5% and no heavy metal impurities, ensuring no harmful substances are released during battery use, and complying with international environmental regulations such as RoHS and REACH.
- Precise Structure, Strong Adaptability: Through CNC precision machining technology, the dimensional tolerance of Lithium Batteries Square Aluminum Shell is controlled within ±0.03mm, which can perfectly match cells of different brands and models, reducing gaps during battery PACK assembly and improving energy density.
- Safety Protection, Multiple Guarantees: The Battery Shell has a built-in explosion-proof valve structure. When the internal pressure of the battery exceeds 1.2MPa, the explosion-proof valve will automatically open to release pressure, avoiding shell rupture; at the same time, the edge of the shell adopts a rounded design to prevent scratching operators or cell separators during assembly.
- Excellent Thermal Conductivity, Extended Lifespan: Aluminum alloy itself has a good thermal conductivity (about 160W/(m·K)), and the battery case can quickly conduct the heat generated by the cell during operation to the external heat dissipation system, controlling the battery operating temperature in the optimal range of 25-40℃ and extending the cell cycle life by more than 30%.
- Eco-friendly and Recyclable, In Line with Trends: The alloy material has a recovery rate of over 95%, which can be reprocessed and reused through smelting after being discarded, reducing resource waste and conforming to the low-carbon development trend of the global new energy industry.
Product Advantages
Lightweight Advantage
Compared with steel shells of the same size, the Lithium Batteries Square Aluminum Shell is more than 40% lighter. When applied to electric vehicles, it can reduce the overall weight of the vehicle and increase the cruising range by 5-8%; when applied to portable energy storage equipment, it can make the product lighter and improve user experience.
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Cost-controllable Advantage
Through large-scale production (monthly capacity up to 500,000 sets) and integrated molding technology, the production cost of our New Energy Aluminum Battery Cases is 15% lower than the industry average, and no subsequent complex processing is required, helping customers reduce supply chain costs.
02
Fast Customization Response
In response to customers' special needs, we can complete the sample design and production of Aluminum LTO Prismatic Battery Cell For EV within 7 days and realize small-batch production within 20 days, far exceeding the industry's average delivery cycle of 30 days, helping customers quickly seize the market.
03
High Quality Stability
A 100% full inspection mode (including size inspection, pressure test, salt spray test) is adopted during the production process, and the unqualified rate of Aluminum Battery Case is controlled below 0.1%, far lower than the industry average of 1%, reducing customers' after-sales maintenance costs.
04
Wide Compatibility
Whether it is liquid lithium-ion batteries, solid-state batteries, or cells of different systems such as LTO, NCM, and LFP, our Lithium Batteries Square Aluminum Shell can provide adaptation solutions, eliminating the need for customers to replace production equipment and reducing transformation costs.
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Production Process
- Material Procurement and Inspection: Purchase 6-series aluminum alloy coils from well-known domestic enterprises. Each batch of materials must pass composition analysis (spectrometer detection) and mechanical performance test (tensile test) before being put into storage.
- Precision Forming: Use a 2000-ton cold pressing machine to stamp the aluminum alloy coil into a square shell blank. During the forming process, real-time monitor the pressure (controlled at 1500-1800kN) and temperature (≤50℃) to avoid material deformation.
- CNC Fine Machining: Use a five-axis CNC machine tool to mill, drill, tap and other processes on the shell blank to ensure that the position accuracy error of the pole hole and heat dissipation hole is ≤0.02mm; at the same time, polish the inner wall, with roughness Ra ≤0.8μm.
- Surface Treatment: First perform trivalent chromium passivation treatment (forming a 5-10μm passivation film), then use cathodic electrophoresis process to spray environmentally friendly coatings. The coating thickness is monitored in real time by a film thickness gauge to ensure uniformity; finally, it is cured at 180℃ to improve coating adhesion.
- Safety Structure Assembly: For Aluminum LTO Prismatic Battery Cell For EV, manually assemble the explosion-proof valve and sealing strip. The sealing strip is made of silicone rubber material resistant to high and low temperatures (-40℃ to 120℃) to ensure waterproof performance; after assembly, conduct an air tightness test (air pressure 0.5MPa, pressure holding for 5 minutes without leakage).
- Finished Product Inspection and Packaging: Each Lithium Batteries Square Aluminum Shell must pass full size inspection (coordinate measuring machine), pressure test (compression resistance ≥500N), salt spray test (sampling, no corrosion for 48 hours); qualified products are packaged with anti-static packaging, packed according to customer needs, and pasted with batch traceability labels.
Application Scenarios
- Electric Vehicle Field: The Aluminum LTO Prismatic Battery Cell For EV is a core component of the power battery PACK for pure electric passenger cars and commercial vehicles (such as logistics vehicles and buses). It is compatible with the battery systems of mainstream automakers such as BYD, Tesla, and NIO, and can meet the vehicle's needs for high safety and long life. It has been batch-applied to the A-Class pure electric model of a domestic new energy automaker.
- Energy Storage Field: In household energy storage (5-20kWh), industrial and commercial energy storage (100-500kWh) and large-scale energy storage power stations (MWh level), New Energy Aluminum Battery Cases can be used as the shell of energy storage batteries. With excellent thermal conductivity and sealing, they ensure the stable operation of batteries in outdoor or high-temperature environments. They have cooperated with leading domestic energy storage enterprises and been applied to photovoltaic energy storage projects in Xinjiang, Qinghai and other regions.
- Consumer Electronics Field: Miniaturized Aluminum Battery Case (size ≤100mm×50mm×20mm) can be used for lithium batteries in laptops, drones, portable power banks and other devices. The lightweight design can reduce the weight of the device and improve the anti-drop performance of the battery. At present, it has been supplied to the wireless headphone battery production line of an international consumer electronics brand.
- Special Vehicle Field: In low-speed electric vehicles such as electric forklifts, golf carts, and patrol cars, the shell can be adapted to large-capacity LFP cells. The Lithium Prismatic Cells Aluminum Shell's anti-extrusion and anti-vibration performance (in line with ISO 16750 vibration standards) can cope with complex road conditions, and it has provided customized shell solutions for a domestic forklift manufacturer.
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