The invention provides an electric vehicle charging pile system which comprises a power supply circuit and a transformer T1, the power supply circuit comprises a starting circuit and a feedback circuit which are electrically connected with the transformer T1, the starting circuit comprises a connector CON, the connector CON is electrically connected with a starting capacitor C12 through a first filter circuit and a full-bridge rectifier, and the capacitance value of the starting capacitor C12 is larger than 22 uF. The first filter circuit comprises an inductor L2 and a capacitor C2, the connector CON is electrically connected with the full-bridge rectifier through the inductor L2 and the capacitor C2 in sequence, the starting capacitor C12 is electrically connected with the chip U2, the chip U2 is electrically connected with the transformer T1, the switching frequency of the chip U2 is 132kHz, and a switching MOS tube is arranged in the chip U2. The first filter circuit supplies power to the starting capacitor C12 so as to start the chip U2, sudden power failure during direct power supply is avoided, the chip U2 adjusts the charging power supply in real time based on the feedback loop, the stability of the power supply is ensured, and the situation that the charging electric quantity is inaccurate is avoided.
本发明提供一种电动车充电桩系统,包括供电电路及变压器T1,供电电路包括均与变压器T1电连的启动电路及回馈电路,启动电路包括与接头CON,接头CON通过第一滤波电路及全桥整流器电连启动电容C12,启动电容C12的电容值大于22uF,第一滤波电路包括电感L2及电容C2,接头CON依次通过电感L2及电容C2电连全桥整流器,启动电容C12电连芯片U2,芯片U2电连变压器T1,芯片U2的开关频率为132kHz,且芯片U2内建开关MOS管。通过第一滤波电路为启动电容C12供电进而使芯片U2启动,避免了直接供电时突然断电,芯片U2基于反馈回路实时调节充电电源,确保电源稳定性,避免了充电电量不准确的情况发生。
Electric vehicle charging pile system
一种电动车充电桩系统
2024-05-24
Patent
Electronic Resource
Chinese
IPC: | B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen |