TY - JOUR
T1 - Innovative Design of the Cooling Topologies for Electric Vehicle Motors
AU - Zi-Chao, Zhang
AU - Qiang, Song
AU - Ahmed, Bilal
N1 - Publisher Copyright:
© Published under licence by IOP Publishing Ltd.
PY - 2019
Y1 - 2019
N2 - According to the different cooling medium, the electric motor cooling styles can be divided into liquid cooling and air cooling; the former involves water cooling and oil cooling while the latter comprises natural air cooling and forced air cooling. Whereas, the air cooling system is difficult to meet various performance requirements for the modern Electric Vehicle (EV). Therefore, approximately all EV motors are liquid cooled at present. Moreover with the trend of EV motors to Permanent Magnet (PM) and to high speed, for instance, the maximum working rotated speed from 10,000rpm to 20,000 rpm, the packaging of the motor is minimized at same power while efficiency drops, lifetime shorten and even cause demagnetization due to thermal effects without optimum design. Consequently, the improvement of the liquid cooling system is essential to enhance the efficiency of the EV motor in the future for higher power density. In this perspective, the innovative cooling topologies of electric machines based on the development results of the parts such as lubricating oil and motive seal of electric vehicles are presented in this paper. It solves some problems brought about by predecessors in view of the high efficiency and reliability of the motor with higher energy density.
AB - According to the different cooling medium, the electric motor cooling styles can be divided into liquid cooling and air cooling; the former involves water cooling and oil cooling while the latter comprises natural air cooling and forced air cooling. Whereas, the air cooling system is difficult to meet various performance requirements for the modern Electric Vehicle (EV). Therefore, approximately all EV motors are liquid cooled at present. Moreover with the trend of EV motors to Permanent Magnet (PM) and to high speed, for instance, the maximum working rotated speed from 10,000rpm to 20,000 rpm, the packaging of the motor is minimized at same power while efficiency drops, lifetime shorten and even cause demagnetization due to thermal effects without optimum design. Consequently, the improvement of the liquid cooling system is essential to enhance the efficiency of the EV motor in the future for higher power density. In this perspective, the innovative cooling topologies of electric machines based on the development results of the parts such as lubricating oil and motive seal of electric vehicles are presented in this paper. It solves some problems brought about by predecessors in view of the high efficiency and reliability of the motor with higher energy density.
UR - http://www.scopus.com/inward/record.url?scp=85069230636&partnerID=8YFLogxK
U2 - 10.1088/1757-899X/533/1/012021
DO - 10.1088/1757-899X/533/1/012021
M3 - Conference article
AN - SCOPUS:85069230636
SN - 1757-8981
VL - 533
JO - IOP Conference Series: Materials Science and Engineering
JF - IOP Conference Series: Materials Science and Engineering
IS - 1
M1 - 012021
T2 - 2019 5th International Conference on Electrical Engineering, Control and Robotics, EECR 2019
Y2 - 12 January 2019 through 14 January 2019
ER -