An Integrated Cooling System for Hybrid Electric Vehicle Motors: Design and Simulation 2018-01-1108
Hybrid electric vehicles offer the advantages of reduced emissions and greater travel range in comparison to conventional and electric ground vehicles. Regardless of propulsion strategy, efficient cooling of electric motors remains an open challenge due to the operating cycles and ambient conditions. The onboard thermal management system must remove the generated heat so that the motors and other vehicle components operate within their designed temperature ranges. In this article, an integrated thermal structure, or cradle, is designed to efficiently transfer heat within the motor housing to the end plates for transmission to an external heat exchanger. A radial array of heat pipes function as an efficient thermal connector between the motor and heat connector, or thermal bus, depending on the configuration. Cooling performance has been evaluated for various driving cycles. Numerical results show that 1.3 kW of peak heat wattage can be accommodated with free convection while 3.2 kW is obtained by adding forced convection using 13.7 W of electric power. The internal motor temperature is maintained within the prescribed limits of 75°C and 55°C values, respectively.
Citation: Huang, J., Shoai Naini, S., miller, R., Wagner, J. et al., "An Integrated Cooling System for Hybrid Electric Vehicle Motors: Design and Simulation," SAE Int. J. Commer. Veh. 11(5):255-266, 2018, https://doi.org/10.4271/2018-01-1108. Download Citation
Author(s):
Junkui (Allen) Huang, Shervin Shoai Naini, Richard miller, John R. Wagner, Denise Rizzo, Katherine Sebeck, Scott Shurin
Affiliated:
Clemson University, US Army TARDEC
Pages: 12
Event:
WCX World Congress Experience
ISSN:
1946-391X
e-ISSN:
1946-3928
Also in:
SAE International Journal of Commercial Vehicles-V127-2EJ
Related Topics:
Hybrid electric vehicles
Electric motors
Thermal management
Heat exchangers
Electric power
Buses
Connectors and terminals
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