摘要
随着汽车电子技术的发展,使用电子冷却风扇替代传统风扇正成为一种发展趋势。电子风扇相较于传统风扇降低了发动机的功率损失及低温条件下的磨损程度。文章分析了在功率器件中发热量占主导地位的MOSFET的发热机理并进行了损耗的相关公式推导。在Icepak中搭建了冷却风扇和控制器的模型并在高温条件下进行有限元仿真分析。仿真结果显示在设计最高环境温度下MOSFET的温度满足要求。
With the development of automotive electronics technology,electronic cooling fans have become a trend to replace traditional fans.Compared with traditional fans,electronic fans reduce engine power loss and abrasion at low temperatures.This article analyzes the heating mechanism of the dominant MOSFET that generates heat in power devices and derives the relevant formula for loss.Models of cooling fans and controllers were established in Icepak and finite element simulation analysis was performed under high temperature conditions.The simulation results show that the temperature of the MOSFET meets the requirements at the designed maximum temperature.
出处
《科技创新与应用》
2020年第11期27-29,共3页
Technology Innovation and Application
作者简介
杨鹏宏(1993-),男,硕士研究生,研究方向:汽车电子。
