集成式车载充电器软启动控制策略研究  

Research on Soft Start Control Strategy of Integrated On-Board Charger

作　　者：钱晓东 高鹤 QIAN Xiaodong;GAO He(School of Intelligent Manufacturing,Anhui Vocational and Technical College,Hefei,Anhui 230000,China;Hefei J-Link Automotive Electronics Co.,Ltd.,Hefei,Anhui 230000,China)

机构地区：[1]安徽职业技术学院智能制造学院,安徽合肥230000 [2]合肥钧联汽车电子有限公司,安徽合肥230000

出　　处：《西昌学院学报（自然科学版）》2023年第2期34-39,共6页Journal of Xichang University(Natural Science Edition)

基　　金：安徽省教育厅自然科学研究重点项目(KJ2020A1039)。

摘　　要：针对电动汽车车载充电模块后级高压DC/DC变换器启动时冲击电流较大、软启动控制算法过于复杂的问题,提出将车载充电模块后级高压输出DC/DC变换器与低压输出双向DC/DC变换器集成,共用高压侧电容、控制板和辅助电源;同时提出采用分段式软启动策略将低压电池通过双向DC/DC变换器给高压侧电容反向预充电。对该电路和软启动控制策略进行软件仿真,并搭建了一台6.6 kW实物验证,结果表明:该策略不仅能够减小启动冲击电流和开机时间,实现起来也更为简单,且节省了硬件电路,降低了体积、重量和成本,具有较好的应用前景和推广价值。When the rear high-voltage DC/DC converter of on-board charger in the electric vehicle is started,the inrush current is large and the soft start control algorithm is too complex.Therefore,it is proposed to integrate the rear high-voltage output DC/DC converter of the charging module with the low-voltage output bidirectional DC/DC converter,shar-ing high voltage capacitors,control board and auxiliary power supply.A new segmented soft start control strategy is pro-posed first time that the high voltage capacitors are reversely pre-charged by the low voltage battery using bidirectional DC/DC converter.A software simulation and an experiment of 6.6 kW module were built.The results show that the strat-egy can limit the large inrush current and reduce startup times.What's more,it was very simple to implement.Some hard-ware circuits are omitted which can help reduce the volumes,weights and costs of module.It has good application pros-pects and promotion values.

关 键 词：集成式车载充电器 冲击电流 双向DC/DC变换器 软启动 反向预充电 

分 类 号：U469.72[机械工程—车辆工程] TM910.6[交通运输工程—载运工具运用工程]