Aichi Steel: Electric axle for EV: 34,000 rpm, 40% lighter
Aichi Steel:
We will respond to the “full-scale spread of electric vehicles and the resulting resource depletion” after 2030.
With our original dysprosium-free bond magnet Magfine ®,
By fusing high-strength materials by our original integrated production of forged steel,
An electric axle for EVs that is 40% smaller and lighter than conventional models.
We succeeded in demonstrating the technology for the first time in the world.
The 13th Automotive World:
This time, from January 20th (Wednesday) to 22nd (Friday), the results will be introduced at the “13th Automotive World” * and the “Original Special Website”.
Electric axle:
The electric axle is a drive unit that integrates the reducer and motor that are indispensable for electric vehicles.
In order to accelerate electrification, it is indispensable to have a large number of electric axles that are compact, lightweight, resource-saving, and have excellent power consumption.
The developed product draws out the torque required for electric vehicles by “rotating at a maximum rotation speed of 34,000 rpm and reducing the speed to a practical range” as a motor for EVs.
[Features of this electric axle]
Smaller and lighter:
motor:
Achieves miniaturization by ultra-high-speed rotation that takes advantage of the features of Magfine® (high magnetic force, high electrical resistance, integral molding on the rotor core * 2)
Decelerator:
Achieves miniaturization of high speed reducers by using transaxle gears (20% lighter than current gears) made of high-strength materials made from our unique forged steel.
→ By combining the above, we aim to reduce the size by about 40% compared to the conventional electric axle.
Excellent recyclability:
Magfine® is a bond magnet.
Only the resin is disassembled and removed after using the magnet.
Nd (neodymium) magnetic powder can be reused.
In the demonstration experiment, we achieved a magnetic particle recovery rate of 90%.
https://www.aichi-steel.co.jp/news_item/20210107_news.pdf
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