Overseas companies already have mature hairpin motor mass production technology, but the core patents belong to a few companies such as Remy and Denso.
#Hairpin motor winding professional#
UP to now, hairpin motor technology was first applied by foreign car companies and has achieved a good demonstration effect in the new energy drive motor market.įor the development of domestic hairpin winding technology, many companies first need to face the problem of professional barriers. It is equipped with a high-performance hairpin motor with a maximum torque of 550Nm and a maximum speed of over 16000rpm, as well as a two-speed dual-clutch transmission. Auto parts supplier BorgWarner acquired Remy company in 2015, thereby obtaining drive motor R&D technology and production capacity, and matching and integrating with the electric drive gearbox eGearDrive, becoming an electric drive axle eDM module. Toyota released the 4th generation Prius in 2015, which is equipped with Denso hairpin motor. The hairpin motor developed by Japan’s HITACHI was installed in Nissan’s Leaf in 2013.
#Hairpin motor winding full#
The use of hairpin winding can increase the slot full rate of the motor winding, thereby improving the efficiency and power density of the motor, but it has the characteristics of complex production processes and high requirements for copper wires and development restrictions.īefore 2010, the hairpin motor developed and produced by foreign companies were used in mass-produced vehicles, and patents were applied for protection. In 2007, the Chevrolet Volt model was equipped with a hairpin motor developed and produced by the Remy Company. With the advancement of production technology, in order to meet the needs of the new energy market, motor windings have been designed develop to the hairpin winding design. This article will introduce the current development status of automotive hairpin winding permanent magnet synchronous motor, including the current status of domestic and foreign industries, motor characteristics, and combined characteristics and current research.Īfter years of research and development, permanent magnet synchronous motor for vehicles has been designed with round copper wires for the development of miniaturization, integration, and high power density of electric drive systems for new energy vehicles.
It has advantages in power, efficiency, and volume, and meets the development needs of the new energy vehicle field. The hairpin motor winding permanent magnet synchronous motor has a higher slot full rate than the traditional round wire motor. Summary: With the development of electric drive systems for new energy vehicles, higher requirements have been put forward for the power density and efficiency of vehicle drive motor.