Lithium Ion Cell Aluminum Shell
Products Description
The Lithium Ion Cell Aluminum Shell is not simply a "container," but a crucial component of the cell's safety system. In practical applications, it must simultaneously meet multiple requirements:
Providing long-term, stable physical protection for the internal electrochemical system
Maintaining structural dimensional stability during charging, discharging, and environmental changes
Participating in the cell's heat dissipation path design to assist in rapid heat release
Serving as a system assembly unit, improving the integration efficiency of the module and PACK stages
This product is engineering-designed, balancing performance, manufacturing, and cost controllability, making it suitable for B2B procurement scenarios involving large-scale, long-term supply.
Main Functions: From Mechanical Protection to System Empowerment
| Structural Integrity Guarantee | In terms of static load bearing, the Aluminum shell for lithium ferro phosphate cell can withstand a torque of 50 N·m without deformation; in terms of dynamic vibration resistance, through resonant frequency design, the first-order natural frequency of the casing is kept away from the cell's operating vibration frequency band (typically >500 Hz), avoiding resonant fatigue. With a wall thickness of 1.5 mm, the casing achieves an optimal balance between weight and strength, reducing weight by 60% compared to a steel casing of equivalent strength. |
| Optimized Thermal Management Path | The thermal conductivity of aluminum (>200 W/(m·K)) is fundamental to thermal management, but efficient heat dissipation is key. We offer precision machining options with a flatness of ≤0.1 mm/100 mm on the large surfaces of the Aluminum Li-ion cells, ensuring uniform thickness of the thermal pad compression and reducing thermal resistance by 25%. For liquid cooling solutions, pre-machined cold plate positioning pin holes and locking threads can be used, reducing assembly steps for customers. |
| Electrochemical Environmental Compatibility | The inside of the battery is a highly corrosive environment; fluorinated electrolytes and trace amounts of hydrofluoric acid pose challenges to aluminum materials. We enhance intergranular corrosion resistance through trace element regulation (such as adding a small amount of titanium to refine grain boundaries). Simultaneously, passivation treatment of the inner wall of the Prismatic Aluminum Case Power Battery forms a dense oxide film, resulting in a corrosion rate of less than 0.01 mm/year in aging tests at 85℃ and 85%RH. |
| Safety Failure Mode Guidance | In extreme cases, the LiFePo4 Prismatic Battery Aluminum Cells should guide the failure mode towards a controllable direction. Through a thickness gradient design, the bottom of the casing has 20% higher resistance to deformation than the sidewalls, ensuring that expansion preferentially extends to the larger surface area, triggering the thermal runaway sensor. The safety valve mounting area employs a weakened design, ensuring accurate opening at the set pressure point and avoiding metal debris generated by casing tearing. |
Design Advantages: Function-Oriented Minimalism
Integrated Molding Design
We utilize a one-piece stretch molding process for the LiFePO4 Aluminum Case Battery Cell and edges as much as possible, reducing seams and structurally improving overall rigidity and airtightness.
Human-Friendly Assembly Considerations
Optimized chamfers and rounded edges ensure smooth, unimpeded high-speed assembly on automated production lines, while preventing scratches on the diaphragm or other Aluminum Battery boxes.
Flexible Design Platform
We have established a modular design database, enabling rapid response to customer customization needs across almost all dimensions, including size, thickness, electrode hole positions, and injection port types.
Reimagining the Future of Battery Packaging
In today's rapidly evolving energy storage technology landscape, battery packaging has evolved from a simple container into a critical subsystem influencing the performance of the entire system. Our square aluminum casing for lithium-ion batteries embodies the culmination of materials science, precision manufacturing, and engineering design, representing the latest advancements in battery packaging technology.
We invite you to explore this innovative and reliable product solution. Whether you are developing next-generation electric vehicle platforms, building large-scale industrial energy storage systems, or designing future-proof portable devices, our engineering team looks forward to collaborating with you to push the boundaries of energy storage technology.
Please feel free to contact our technical advisory team for detailed technical information or to discuss your specific application needs. Let's work together to provide the world with safer, more efficient, and more reliable energy solutions.
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