充电桩计量过程中输出与充电需求不匹配问题分析及处理

针对充电桩现场测试设备的充电需求与实际输出不一致，出现电压、电流不匹配的问题，设计了一套检测方案，构建出包括电流检测模块、电压检测模块和示波器检测模块的检测电路，通过采样电压和电流信号，计算出不同负载下充电桩输出电流和电压值，并设计了包括直流电能采集电路，由双通道AD转换AD7380、可编程增益放大器、可编程增益放大器、增益电阻Rg2和电源变换器、低通滤波器电容CL、低通滤波器电阻RL组成的检测电路，在检测电路中，为了提高检测效率，还设置了校正电路。通过试验，本研究方法分析直观，误差低。

Analysis and Treatment of the Mismatch Between Output and Charging Demand in the Process Of Charging Pile Metering

In view of the difference of charging requirements of on-site testing equipment and actual output for charging piles, resulting in voltage and current mismatches, a set of detection scheme was designed, construct a detection circuit including a current detection module, a voltage detection module, and an oscilloscope detection module, Calculate the output current and voltage values of the charging pile under different loads by sampling the voltage and current signals, a detection circuit consisting of a dual channel AD conversion AD7380, a programmable gain amplifier, a programmable gain amplifier, a gain resistor Rg2, a power converter, a low-pass filter capacitor CL, and a low-pass filter resistor RL is designed, including a DC power acquisition circuit, In the detection circuit, a correction circuit is also provided to improve the detection efficiency. Through experiments, this research method is intuitive in analysis and has low error.