Prismatic Aluminum Casing Power Battery

Prismatic Aluminum Casing Power Battery

A Prismatic Aluminum Casing Power Battery is an aluminum alloy housing component used to encase prismatic lithium-ion cells; it primarily serves functions such as protecting the cell's internal structure, providing external mechanical protection, ensuring sealing integrity, and facilitating battery system integration. Unlike the flexible packaging used for pouch cells, prismatic aluminum casings possess a distinct geometric structure and load-bearing capacity, requiring a balance between lightweight design, forming precision, welding reliability, and sealing performance. For power batteries in new energy vehicles, energy storage batteries, and other high-energy-density power systems, the battery casing is far more than a simple metal container. Factors such as casing dimensions, wall thickness distribution, bottom structure, opening design, welding zones, and the fit of the cover plate all impact subsequent cell assembly and battery pack integration.
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What is a Prismatic Aluminum Casing Power Battery?

 

Prismatic Aluminum Casing Power Battery

Prismatic lithium-ion battery aluminum casings feature a metal shell structure. Compared to traditional steel casings, aluminum alloy offers reduced overall weight while meeting structural requirements, alongside excellent thermal conductivity and ease of processing.

These products typically consist of a main body, a bottom structure, side walls, an opening, and a sealing area designed to mate with the top cover; features for positioning, reinforcement, clearance, and assembly can be further customized based on the specific cell structure.

Key characteristics include:

A prismatic shape suitable for cell array and modular layouts;
Aluminum alloy material that balances lightweight design with structural support;
Precision forming that ensures consistent internal space for the battery cells;
Reliable joining of the casing and top cover via appropriate welding processes;
Customization options tailored to specific cell dimensions and battery system architectures;
Suitability for applications requiring high space utilization, such as power batteries and energy storage systems.

In-Depth Analysis of the Manufacturing Process for Aluminum Li-ion cells

The production of a high-quality rectangular aluminum casing relies on a rigorous sequence of critical processes:

Precision Cup Stamping and Multi-Stage Deep Drawing

Controls wall-thinning rates and prevents cracking at the transition zone between the casing bottom and sidewalls;

01

Die Engineering

In-house mold design and maintenance capabilities ensure faster response times for custom development and lower costs for mold modifications during mass production;

02

Top Cover and Explosion-Proof Valve Integration

The top cover assembly performs three key functions-terminal insulation, explosion-proof pressure relief, and airtight sealing-and is ensured through robotic assembly combined with CCD visual inspection;

03

Laser Sealing Welding

Control over weld cross-section depth, porosity, and spatter is vital for sealing integrity; we employ an in-line weld inspection system to screen every single unit;

04

Helium and Airtightness Testing

Comprehensive testing of sealing performance to eliminate even micro-leaks-a crucial, unseen safeguard for the long-term cycle life of power batteries.

05

Technological Process of Prismatic Aluminum Casing Power Battery

 

Application Advantages for Aluminum LTO Prismatic Battery Cell For EV: Tailored to Specific Scenarios

 

Industrial/Commercial & Residential Energy Storage Rectangular form factor maximizes cabinet space utilization; long cycle life lowers the levelized cost of energy (LCOE); corrosion-resistant aluminum casing is ideal for coastal and outdoor installations.
Commercial & Specialty Vehicles High vibration and shock resistance; protective top-cover design mitigates risks from road debris and water exposure; supports rapid charging.
Construction & Mining Equipment Withstands dust, rough terrain, and high-current surges; modular design facilitates convenient on-site maintenance.
Marine & Port Machinery Excellent salt-spray resistance of aluminum; meets marine environmental standards when paired with appropriate ingress protection ratings.
Telecom Base Stations & UPS Replaces lead-acid solutions; offers lighter weight, a smaller footprint, and higher cycle life, reducing the need for structural reinforcement of equipment rooms.

 

Internal Structure and Application of Prismatic Aluminum Casing Power Battery

Frequently Asked Questions for Aluminum Battery Box
 
 

1. What types of batteries are Prismatic Aluminum Battery Casings suitable for?

 

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They are primarily used for prismatic lithium-ion cells and can be applied to power batteries for new energy vehicles, energy storage systems, UPS units, and other industrial power supply systems. Specific suitability depends on the cell structure and the customer's system design.

2. Can the dimensions of prismatic aluminum battery casings be customized?

 

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Yes. Aluminum casings usually require customization based on cell dimensions, capacity, internal structure, and available space within the battery pack; engineering development can be carried out using 2D drawings, 3D models, or prototypes.

3. What materials are commonly used for battery aluminum casings?

 

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Various aluminum alloys can be selected based on forming and welding requirements, such as AL1060, AL3003, AL5052, and AL6061. The final material choice is determined by considering the product structure and customer validation requirements.

4. What manufacturing processes are primarily used for battery aluminum casings?

 

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Key processes include stamping, deep drawing, sizing (re-forming), trimming, and welding. For deep-cavity prismatic structures, mold design and the forming process significantly influence the consistency of final dimensions.

5. Can battery aluminum casings be developed according to customer drawings?

 

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Yes. For OEM/ODM projects, we can evaluate materials, tooling, and production processes based on customer-provided engineering drawings or 3D models, and support the project through sample validation and subsequent mass production.

Prismatic Aluminum Casing Power Battery Details Show

 

contact us

 

For engineering procurement projects requiring consistency in cell dimensions, molding stability, and quality in subsequent welding and assembly, we offer integrated engineering support-spanning materials and tooling to mass production processes. We welcome the submission of drawings and LiFePO4 Aluminum Case Battery Cell specifications for technical evaluation.


Ms Tina from Xiamen Apollo

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