针对新能源汽车电机紧凑、轻量化、高功率密度和高可靠性的要求,提出基于热管-风冷系统的新型冷却系统。设计了基于热管-风冷系统的电机结构,建立电机有限元热分析模型并验证其可行性；通过有限元模拟,研究该新型电机在额定功率和峰值功率下的温度场。结果表明:热管-风冷系统能有效地控制电机的温升。与水冷系统相比,无需水泵、节温器、水箱、管路以及其他装置,结构简单、紧凑,有利于实现新能源汽车的轻量化和高功率密度。

As proved, new energy vehicles rely on the compact structure, light weight, high power density and high reliability of motor. Therefore, a new cooling system based on heat pipeair cooling system was designed. Firstly, a motor structure based on heat pipeair cooling system was designed. Then a motor’s finite element model (FEM) of thermal analysis was established and validated feasibly. The temperature field of this new kind of motor was investigated through FEM simulations under the rated power and the peak power. The results showed that the heat pipeair cooling system could effectively control the motor’s temperature rise. Compared with the water cooling system, the heat pipeair cooling system was simple and compact because of no water pump, tank, thermostat and other necessities. Hence, the heat pipeair cooling system fits itself more acceptable to realize the light weight and high power density in new energy vehicles.

TM 301.4+1

广东省科技计划项目(2014B010126003)；中山职业技术学院科研项目(2017KQ02)