Batteries

Aluminum Alloys for Lithium-Ion Battery Sealing Materials

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For lithium-ion battery anti-explosion valves

UACJ has designed a novel form of aluminum alloy for use with the anti-explosion valves of lithium-ion batteries, where thin-walled formation is required. It has excellent formability and can be formed integrally with the anti-explosion valve by press working, reducing the foil welding workload. Laser machining is also easy to perform.

Features

  • Realizes an advanced level of strength, formability and weldability
  • A newly designed aluminum alloy that is both strong and enables easy working of the anti-explosion valve
  • Lineup also includes 3003, which dramatically reduces laser welding defects.

Properties Comparison

Easy integrated formation with anti-explosion valve

新開発
標準

Weld penetration depth in laser welding

Weldability enhanced by 160%

FS115
FS115
1050
1050

Aluminum alloys that optimize the chemical composition and manufacturing process

Alloy Temper Mechanical properties Material properties Features
Tensile strength
(N/mm2)
Proof
stress
(N/mm2)
Elongation
(%)
Base
plate strength
Anti-explosion valve formability Laser weldability
FS115 O 125 70 40 Al-Fe high-strength material

Superior laser weldability

Easy working of anti-explosion valve
H14 165 150 14
H16 185 155 6
3003M O 134 65 32 Al-Mn material that reduces laser defects
3003 O 119 52 37 Al-Mn alloy materials
H14 170 160 6
1050 O 83 38 46 × Pure-aluminum materials