浅谈电动自行车充电器中安全隔离变压器的电气间隙和爬电距离问题  

Discussion on the Clearance and Creepage Distance of Safety Isolating Transformer of Charger for Electric Bicycles

作　　者：陈其勇 肖小军 谢文 李雷 余华超 

机构地区：[1]广东产品质量监督检验研究院,广州510670

出　　处：《日用电器》2023年第12期93-97,共5页ELECTRICAL APPLIANCES

摘　　要：由于越来越多的电动车充电器输出接口采用可触及电源插针的方式,防触电安全方面的关注度不断攀升,有必要对保障使用者人身安全的关键要素“电气间隙和爬电距离”的内部电路及电子元件加强考核。本文从充电器的电气间隙和爬电距离入手,重点对关键元件“安全隔离变压器”存在的相关问题进行分析,对不同情况提出可行的改进方法,其改进方法可作为新国标充电器电路设计及变压器选型的借鉴。As more and more the output connectors of the charger for electric bicycle are using a touchable power pin,the concerns about the safety of chargers against electric shock are rising.It is necessary to add more assessment to the electrical clearances and creepage distances of internal circuits and electronic component.This article analyzes clearance and creepage distance of charger for electric bicycles,focuses on the problems of the safety isolation transformer,lists the feasible improvement methods,which can be used for reference in the new national standard charger circuit design and transformer selection.

关 键 词：电动自行车充电器 变压器 电气间隙 爬电距离 

分 类 号：U484[交通运输工程—载运工具运用工程] TM910.6[交通运输工程—道路与铁道工程]