基于MOSFET的电动汽车电源开关设计  

Design of power switch of electric vehicle based on MOSFET

作　　者：尹百通 龚元明 Yin Baitong;Gong Yuanming(College of Mechanical and Automotive Engineering,Shanghai University of Engineering Science,Shanghai 201620,China)

机构地区：[1]上海工程技术大学机械与汽车工程学院,上海201620

出　　处：《电子技术应用》2021年第12期126-130,共5页Application of Electronic Technique

摘　　要：针对传统继电器的机械磨损和电弧灼烧的现象,为满足电动汽车动力电池的开关控制要求,设计了一款基于MOSFET的大功率电源开关。该开关能够有效提高开关的通断速度和降低机械损坏。详细分析了电源开关工作原理,其次阐述了电源开关结构设计和各模块的设计优势,其中就如何选取合适的MOSFET驱动器进行重点阐述,最后,通过电流耐受能力试验,验证电源开关可以在375 A大电流下正常工作。Aiming at the mechanical abrasion and arc burning of traditional relays,in order to meet the switch control requirements of the power battery of electric vehicles,a high-power power switch based on MOSFET was designed.The switch can effectively improve the on-off speed of the switch and reduce mechanical damage.This article analyzes the working principle of the power switch in detail,and then elaborates the structure design of the power switch and the design advantages of each module.It focuses on how to select a suitable MOSFET driver.Finally,through the current withstand capability test,it is verified that the power switch can operate normally at 375 A high current.

关 键 词：电源开关 继电器 MOSFET驱动器 MOSFET 

分 类 号：TN386.1[电子电信—物理电子学]