3105 battery shell|laser welding compatibility passed UL1642 safety certification

The 3105 aluminum alloy battery shell is laser-welded with zero porosity UL1642 safety certification, becoming the core choice of the world's top 10 battery factories! Adapted to Tesla 4680 and CATL CTP 3.0 production lines, the sealing performance is increased by 50% and the production cost is reduced by 30%. Reveal how high-manganese alloy solves the dilemma of power battery safety and cost!

International application scenarios
1. Electric vehicle batteries
Tesla 4680 battery case (US):

The laser welding speed ≥ 10m/min, the porosity is <0.1% (2% for traditional welding), and it has passed the UL 2580 electric vehicle battery safety certification.

The weight of the case is reduced by 15% (0.8mm→0.65mm), and the battery life is increased by 5% (2023 Tesla Battery Daily Data).

BYD Blade Battery (China):

The vibration resistance test > 50G (GB 38031), the welding strength ≥ 200MPa (85% of the base metal), and the cycle life exceeded 6,000 times.

2. Energy storage system
CATL Container Energy Storage:

IP67 waterproof (IEC 60529), -40°C low temperature welding without brittleness, passed UL 9540A fire test.

Fluence Grid-Scale Energy Storage (US):

The thermal conductivity of the shell > 160W/m·K (3 times higher than that of the steel shell), and the energy consumption of temperature control is reduced by 25%.

3. Consumer Electronics
Apple MacBook Battery Compartment:

The 0.3mm ultra-thin shell has a laser welding deformation of < 50μm (the industry average is 200μm), which is suitable for Unibody's precision structure.

Samsung solid-state battery prototype:

Core Advantage: "Double Breakthrough" in Process Safety

1. Laser welding compatibility

2. UL1642 certification core items
Explosion-proof safety: no fire and explosion in acupuncture test (7.3V/10.8A overcharge condition).

Sealing reliability: 55kPa negative pressure test leak rate< 0.05cc/min (American standard MIL-STD-883).

Environmental resistance: -40°C~85°C thermal shock 100 times without leakage (IEC 60068-2-14).

3. Economic advantages
Material costs are reduced by 20%: Mn content is 0.3-0.8% (3003 is 1.0-1.5%), and the alloy cost is lower.

Production efficiency increased by 40%: laser welding is not required to clean/grind the process, and the single-line production capacity reaches 200,000 pieces/day.

Future Trend: Technology iteration and standard upgrading
1. Breaking through the limits of materials
0.5mm ultra-thin deep drawing: nano precipitation strengthening (Mg₂Si phase), deep drawing ratio 2.5 (Japan UACJ 2025 route).

Composite coating technology: graphene conductive layer (surface resistance <0.1Ω/□), compatible with wireless charging.

2. The intelligent welding revolution
AI weld monitoring: real-time infrared thermal imaging and deep learning (KUKA AIV system), with a yield rate of 99.99%.

Femtosecond laser applications: 90% reduction in heat input (Trudisk 8000) and near-zero distortion.

3. Global regulatory upgrades
EU New Battery Law (2027): Mandatory carbon footprint declaration, priority procurement of hydropower aluminum shells (carbon footprint< 1tCO₂e/piece).

China GB 38031-202X: The collision safety standard has been raised, requiring the shell to resist compression > 200kN (the current standard is 100kN).

4. Solid-state battery adaptation
Internal pressure resistance 20 MPa: Isostatic process strengthens the housing (QuantumScape cooperation solution).

Lithium metal compatible coating: AlF₃ passivation layer inhibition dendrites (patented by SES AI Laboratories).