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BMW i Ventures co-leads investment in radial-flux dual-rotor motor technology: DeepDrive

BMW i Ventures announced a co-lead investment in the $16.1-million Series A round for startup DeepDrive. DeepDrive has developed a cost- and resource-efficient dual-rotor motor, extending the range of electric vehicles. Other investors include UVC Partners, Bayern Kapital with Wachstumsfonds Bayern, and Continental’s Corporate Venture Capital Unit. The company is also backed by automotive industry veteran Dr. Peter Mertens.

The patented DeepDrive dual-rotor, radial flux machine combines an inner and outer rotor with two air gaps and benefits from very high material utilization and lowest iron losses. The key enabler for the dual-rotor concept is a new distributed winding concept with a slot-filling factor above 80%. In combination with an integrated SiC MOSFET inverter, the DeepDrive drive units deliver highest system efficiencies of above 98%.


Exploded in-wheel drive configuration of DeepDrive dual-rotor motor.

The motor can be installed in any vehicle as a central drive or as an in-wheel drive. The patented technology increases the range of vehicles, achieves high torque density, is cost-efficient to manufacture and requires fewer natural resources; in turn, reducing environmental impact. DeepDrive says that their motor will have less than 30% of the cost per N·m in comparison to current state-of-the-art motors.

With its patented and unique e-motor architecture, DeepDrive could set new standards for e-mobility. The highly efficient e-motors offer major advantages in terms of weight, cost and space. They enable the next generation of efficient and resource-saving electric vehicles. DeepDrive’s e-motor technology is designed for easy and cost-effective mass production. We are pleased that our involvement can help this new technology achieve a breakthrough.

—Marcus Behrendt, Managing Director at BMW i Ventures

The DeepDrive team is working with eight of the top ten OEMs and is on track to bring its technology to production by 2026.

With the fresh capital, the company plans to start manufacturing its motors, increase its headcount to respond to the high demand from OEM customers and win first series commitments.



Some axial designs use both sides


Not only are they lighter and less complex and don't require heavy multiple and differential gearing, axial flow hub motors are less costly.
I hope the designers at Tesla are reading GCC for ideas as hub motors would be a great addition to their new $25k affordable EV.


I'm assuming this is inherently better than Protean Motors in wheel drive?

The depth of my ignorance is such that I had thought that radial flux is something chiefly available on the Enterprise! - so please grade explanations to suit those at the very back of the class! ;-)

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