The invention discloses an isolation detection circuit system for a charging control signal state of an electric vehicle. The isolation detection circuit system comprises a plurality of groups of comparator circuits, a signal conditioning circuit, a switching circuit, an isolation circuit and a group of control circuits, the negative phase input end of the comparator circuit receives different fixed voltages, the signal conditioning circuit divides the voltage of a control signal from an electric vehicle interface and then sends the divided control signal to the positive phase input end of a comparator, and the switching circuit responds to high and low level signals output by the comparator and controls the on and off of the photoelectric coupler. The analog control signal is converted into a digital signal, the control circuit judges the charging control state of the electric vehicle according to the output signal of each photoelectric coupler, and the vehicle end of the electric vehicle and the pile end of the charging pile make corresponding response actions by identifying the charging control state; the detection circuit provided by the invention can effectively avoid external interference and improve the accuracy and stability of signal processing.

    本发明公开一种电动汽车充电控制信号状态隔离检测电路系统,包括若干组比较器电路、信号调节电路、开关电路、隔离电路以及一组控制电路;所述比较器电路的负相输入端分别接受不同的固定电压,所述信号调节电路将来自电动汽车接口的控制信号分压后送至比较器正相输入端,所述开关电路响应比较器输出的高低电平信号,控制光电耦合器的导通与截止,从而将模拟的控制信号转换为数字信号,所述控制电路根据各光电耦合器输出信号判断电动汽车的充电控制状态,通过识别当充电控制状态,让电动汽车车端与充电桩桩端做出相对应的响应动作;本发明提供的检测电路能够有效地避免外界干扰,提高信号处理的精确度和稳定性。


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    Title :

    Electric vehicle charging control signal state isolation detection circuit system


    Additional title:

    一种电动汽车充电控制信号状态隔离检测电路系统


    Contributors:
    LIN SUYUE (author)

    Publication date :

    2024-07-09


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    G05B Steuer- oder Regelsysteme allgemein , CONTROL OR REGULATING SYSTEMS IN GENERAL / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / H02J CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER , Schaltungsanordnungen oder Systeme für die Abgabe oder Verteilung elektrischer Leistung



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