The invention discloses a method and a device for adjusting charging current of a charging pile according to power supply voltage and the charging pile. The method comprises the following steps: detecting system voltage, namely the power supply voltage, of an alternating-current power grid connected with an alternating-current charging pile of an electric vehicle in real time; when the system voltage is in a normal power supply voltage range, the electric vehicle charging pile performs charging current control by a vehicle-mounted charger according to the real-time charging demand of the vehicle under the condition that the maximum output power limit of the electric vehicle charging pile is not exceeded; and when the system voltage is lower than the normal power supply voltage range, the alternating current charging pile of the electric vehicle interacts with the vehicle-mounted charger through communication, and the alternating current charging current of the electric vehicle is reduced until the system voltage returns to normal, so that the system voltage is kept stable, and serious low voltage caused by disordered charging after a large number of electric vehicles are connected to a rural power grid is reduced.
本发明公开了一种根据供电电压调节充电桩充电电流的方法、装置及充电桩,本发明实时检测电动汽车交流充电桩所接交流电网的系统电压,即供电电压;当系统电压处于正常供电电压范围时,电动汽车充电桩在不超过自身最大输出功率限制下,由车载充电机根据车辆的实时充电需求进行充电电流控制;当系统电压低于正常供电电压范围时,电动汽车交流充电桩通过通讯与车载充电机交互,降低电动汽车交流充电电流,直至系统电压恢复正常,以维持系统电压稳定,降低大量电动汽车接入后的无序充电给农网造成严重低电压。
Method and device for adjusting charging current of charging pile according to power supply voltage and charging pile
根据供电电压调节充电桩充电电流的方法、装置及充电桩
2024-02-23
Patent
Electronic Resource
Chinese
IPC: | B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen |
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