InfiMotion’s Magnesium-Aluminum Alloy Dual Motor Assembly Claims 25% Weight Reduction over Aluminum

Why It Matters

A 25 % weight cut directly boosts EV range and efficiency, giving manufacturers a new material pathway for lighter powertrains. Integrated cooling and high‑speed capabilities accelerate adoption of compact, high‑performance drives.

Key Takeaways

• 25% lighter dual‑motor housing versus conventional aluminum
• Magnesium‑aluminum alloy retains production‑grade structural hardness
• 360° bidirectional oil cooling manages thermal loads efficiently
• Magnetic‑field‑adjustable motor cuts no‑load drag losses
• 36,000 rpm motor targets high‑performance electric vehicles

Pulse Analysis

The race to lighter electric powertrains has intensified as automakers chase every percentage point of range and efficiency. InfiMotion’s latest dual‑motor assembly, unveiled at the International Forum on Automotive Power Systems in Shanghai, leverages a magnesium‑aluminum alloy housing that shaves roughly 25 % off the mass of a conventional aluminum unit. By blending magnesium’s low density with aluminum’s strength, the alloy delivers production‑ready hardness while cutting weight—a combination that has been elusive for mass‑produced drive modules.

Beyond the alloy, InfiMotion pairs the motor pair with a proprietary 360° bidirectional oil‑cooling system, circulating coolant around the stator and rotor to flatten temperature gradients during high‑load events. The company also demonstrated a magnetic‑field‑adjustable motor that dynamically tunes flux, reducing iron losses at light load or high speed, and a 36,000 rpm ultra‑high‑speed motor aimed at performance‑oriented EVs. A 9‑in‑1 integrated e‑drive controller consolidates power electronics and vehicle‑control functions, simplifying packaging and further trimming vehicle weight.

These innovations arrive at a moment when OEMs are consolidating components to lower bill‑of‑materials costs and meet stricter emissions standards. A 25 % weight reduction in the drive unit can translate into several extra miles of range or allow designers to reallocate space for batteries, directly impacting vehicle pricing and competitiveness. If the alloy’s manufacturing processes scale without cost penalties, InfiMotion could set a new benchmark for powertrain design, prompting rivals to explore similar lightweight material strategies.