Why Are More Powertrain Systems Adopting Hairpin Motors?

As electric vehicle technology continues to advance, hairpin motors are becoming an increasingly popular choice in modern powertrain systems.

One of the key differences between a traditional round wire motor and a hairpin motor lies in the winding design.

In a round wire motor, the circular conductors leave more unused space inside the stator slots, resulting in a copper fill factor of approximately 40%.

Hairpin motors use rectangular conductors that fit more tightly within the slots, increasing the copper fill factor to over 60%.

This optimized design brings several advantages:

• Higher motor efficiency

• Better heat dissipation

• Lower operating noise

• Smoother power delivery

• More compact motor structure

For vehicle users, these benefits translate into a quieter ride, improved energy utilization, and a more refined driving experience.

As part of our ongoing product development, our powertrain solutions are gradually incorporating hairpin motor technology to provide higher performance and better value for customers.

With continuous innovation in electric drive systems, hairpin motors are helping shape the next generation of efficient and reliable mobility solutions.