基于PWM软开关技术的智能充电机的设计与实现  

Design and Implementation of Intelligent Charger Based on PWM Soft Switching Technology

作　　者：曾小波[1] 葛庆[1] 旷永红[2] ZENG Xiaobo;GE Qing;KUANG Yonghong(Hunan Vocational Institute of Technology,Xiangtan,Hunan 411104,China;Hunan Institute of Engineering,Xiangtan,Hunan 411104,China)

机构地区：[1]湖南理工职业技术学院,湖南湘潭411104 [2]湖南工程学院,湖南湘潭411104

出　　处：《自动化应用》2024年第14期83-85,共3页Automation Application

基　　金：湖南省自然科学基金项目(2021JJ60050);湖南省教育厅资助科研项目(21C1202)。

摘　　要：针对由工频变压器和整流电路组成的传统充电机存在体积大、不便运输、可靠性差等缺陷,采用无工频变压器开关电源技术,按照蓄电池充电特性曲线特点,采用恒流-恒压(CC-CV)充电法,进行系统方案及主电路设计,并使用整流—Buck降压斩波模式和PWM软开关技术控制充电机电路。实验表明,与工频型充电机相比,该方法能显著延长蓄电池使用寿命。Aiming at the defects such as large volume,inconvenient transportation and poor reliability of the traditional charger composed of frequency transformer and rectifier circuit,it adopts the switching power supply technology without frequency transformer,adopts the constant current-constant voltage(CC-CV)charging method according to the characteristics of the battery charging characteristic curve,carries out the system scheme and the main circuit design and uses the rectifier—Buck step-down chopping mode and PWM soft switching technology to control the charger circuit.Experiments show that this method can significantly extend the service life of the battery compared with the industrial frequency type charger.

关 键 词：PWM软开关技术 能充电机 DC/DC变换器 

分 类 号：TM46[电气工程—电器]