Breaking Through The Width Limit: 1100 Alloy Coil (2200mm) Is Used for Integrated Molding of Photovoltaic Frames

Technological disruption: Why has 2200mm ultra-wide become a new benchmark for photovoltaic frames?

Material genes

Base material: 

1100 aluminum alloy (aluminum content≥99.0%), with high formability, conductivity and cost advantages, density 2.71g/cm³.

Ultra-wide breakthrough: 

2200mm width is the widest specification in the current photovoltaic frame industry, reducing the splicing joint by 70% compared with the traditional 1500mm sheet, and increasing the overall strength of the frame by 25% (ASTM E8 test).

Technological revolution

Integrated roll forming: 

continuous production of frame profiles in a single roll (no welding/riveting), processing efficiency increased by 40%, cost reduction by 18% (contrast to the block process).

Precision control: 

width tolerance ±0.5mm, profile straightness ≤1mm/m (in line with IEC 61215 photovoltaic module standard).

Performance jumps

Wind pressure resistance: 

2200mm width enhances structural stability, and passed UL 2703 wind load test (60m/s wind speed).

Corrosion resistance: 

optional anodizing or fluorocarbon spraying, salt spray test > 2000 hours (ISO 9227), suitable for desert, coastal and other harsh environments.

International Application Atlas: The "Aluminum-based Skeleton" of Global Photovoltaic Power Plants

1. Large-scale ground power stations

American Desert PV Farm (California)

Requirements: Resistant to sand and dust wear, quick installation.

Solution: 2200mm 1100 alloy coil rolled frame, hard anodized surface (thickness 20μm).

Effect: The number of installations in a single day is increased by 50%, and the sand and dust wear rate is reduced by 90%.

Middle East Bifacial Power Project (UAE)

Requirements: High temperature resistance (60°C), compatible with the high stiffness requirements of bifacial modules.

Solution: ultra-wide aluminum frame with integrated design of internal stiffeners, 65% lighter weight than steel frame.

Results: 7% increase in power generation efficiency (reduced hot spot effect) and TÜV Rheinland certification.

2. Distributed PV and BIPV

European C&I Roofs (Germany)

Requirements: lightweighting (roof load limiting), snow load resistance.

Solution: 2200mm wide thin-walled frame (1.5mm thickness), yield strength ≥ 110MPa.

Result: 30% reduction in roof load bearing according to EN 1991-1-3 for snow loading.

Photovoltaic Curtain Wall Asia (Singapore)

Requirements: Architectural aesthetic integration, typhoon resistance.

Solution: matte fluorocarbon coating with special-shaped curved surface rolling, suitable for curved glass components.

Effect: Green Mark platinum certification, zero damage record during typhoon season.

3. Offshore PV and floating power stations

China Coastal Floating Power Station (Zhejiang)

Requirements: Resistant to seawater corrosion, surge impact.

Solution: ultra-wide aluminum frame epoxy zinc-based composite coating, salt spray test > 5000 hours.

The result: Extended maintenance intervals from 2 to 10 years, 40% lower cost than stainless steel solutions.

Nordic Fjords Project (Norway)

Requirements: -30°C low temperature toughness, ice floe impact resistance.

Solution: 1100 alloy low-temperature tempering process, impact toughness increased by 35% (ISO 148-1 standard).

Future Trends: The "Technology Frontier" of Ultra-Wide Aluminium Coil

1. Break through the width limit again

2500mm R&D: Adapt to the next generation of ultra-large modules (2300mm×1300mm) and reduce cutting loss by 5% (LONGi Green Energy 2025 Technology Roadmap).

Tailored laser welding technology: local widening to 3000mm to meet the integration requirements of double-row modules (under verification of First Solar experimental line).


2. Material-process collaborative innovation

Nano Coating Technology: Graphene-modified coating increases salt spray resistance to 10,000 hours (MIT Lab prototype stage).

Intelligent rolling production line: AI real-time control of rolling parameters, profile accuracy up to ±0.2mm (Siemens Industry 4.0 solution).

3. Carbon neutral drive

Zero-carbon aluminum application: the proportion of hydropower aluminum/recycled aluminum will be increased to 50% (IAA 2050 target), and carbon emissions per ton of frame will be reduced to 1.5tCO₂e.

Closed-loop frame recycling: mechanical dismantling-smelting regeneration efficiency of 95% (commercialization of the EU CircuLiSe project).

4. Emerging markets exploded

Off-grid power plants in Africa: Lightweight frames reduce transportation costs ($1,200 per megawatt in freight) and promote PV parity.

Space photovoltaic system: aluminum radiation resistance optimization for low-earth orbit power station (NASA Artemis program derivative application).

Data Preview: The "Aluminum Variable" of the Trillion-level Track
Capacity forecast: The global photovoltaic aluminum frame market size will be CAGR 11.2% from 2023 to 2030, and the penetration rate of ultra-wide products will increase from 8% to 35% (Bloomberg New Energy Finance).

Cost curve: Integrated molding technology reduces the cost of the bezel from 0.08/W to 0.05/W (2023 vs 2030).

Evolution of technical indicators:

Tensile strength: 110MPa → 150MPa (microalloyed)

Weather life: 25 years → 40 years (self-healing coating)

Production speed: 20m/min → 50m/min (ultra-high speed rolling)

From the Gobi tidal flat to the deep sea blue waves, the 2200mm ultra-wide aluminum coil is reconstructing the photovoltaic boundary with the gene of "wider, stronger and greener". Under the grand narrative of carbon neutrality, this industrial revolution driven by material innovation may give birth to the "golden slope" of photovoltaic cost reduction in the next decade - and enterprises that have mastered ultra-wide core technologies are destined to become "hidden champions" in the green energy era.