电动车充电站多功能智能充电器的设计

A RESEARCH ON THE DESIGN OF MULTI-FUNCTION SMART CHARGERS IN THE CHARGING STATION FOR ELECTRIC VEHICLES

目前较先进的电动车充电站大都采用变电流间歇充电法,该法可以实现蓄电池的快速充电,但无法避免极化现象的产生,并且只能对几种固定电压和容量的蓄电池进行充电。为此,介绍了一种新型电动车充电站智能充电器的设计。系统采用波浪式变电压变电流正负零脉冲充电法;主电路主要由半桥逆变电路、放电电路和辅助电源电路组成;控制系统采用了PIC单片机,借助SG3525和霍尔传感器来实现充电控制。该系统不仅避免了极板极化现象的产生,而且能对不同电压和容量的电池进行充电选择,还可以显示实时电量,从而更好地保护了蓄电池,提高了电动车充电站的交互性与智能性。

At present, more advanced electric vehicle charging stations were powered by alternating current intermittent charging method, and this method can achieve the fast charging of the storage battery, but can not avoid the polarization phenomenon, and only aim at the storage battery with fixed voltage and capacity.In doing so, we produce a new type designof electric car charging stations for smart chargers. The system adopts the method of variable voltage alternating current wave of plus or minus zero pulse charging; the main circuit consists of a half-bridge inverter circuit, the discharge circuit and the auxiliary power supply circuit; and the control system uses a PIC microcontroller, utilizing SG3525 and Hall sensor to achieve the charge control. The system not only avoids the polarization plate production, but also provide more charging choices for the batteries with different voltage and capacity. In addition, this system can achieve real-time charging and display real-time electric quantity so as to protect the battery better and improve the interaction and intelligence of electric vehicle charging stations.