The invention discloses a safety protection circuit of a charging pile, and relates to the technical field of charging pile protection, and the safety protection circuit comprises an intelligent control module which is used for signal receiving and module control; the charging pile module is used for power supply control; the voltage sampling module is used for isolating voltage sampling and signal processing; the abrupt change judgment module is used for phase shift and signal superposition processing; the absolute value module is used for absolute value processing; the abnormity judgment module is used for comparing the input signal with the fault threshold value, and the intelligent control module reduces the voltage value of the fault threshold value; the gating control module is used for controlling a transmission path of a signal; and the anomaly detection module is used for electric energy storage and voltage anomaly judgment. According to the safety protection circuit of the charging pile, power-off protection can be carried out when the sudden change degree exceeds the fault threshold value, the fault threshold value is reduced and the sudden change degree is judged again when the sudden change degree does not exceed the fault threshold value, whether alternating current electric energy provided by the charging pile is abnormal or not can be predicted in advance, and the power supply safety of the charging pile is improved.

    本发明公开了一种充电桩的安全保护电路,涉及充电桩保护技术领域,包括智能控制模块,用于信号接收和模块控制;充电桩模块,用于供电控制;电压采样模块,用于隔离电压采样和信号处理;突变判断模块,用于移相和信号叠加处理;绝对值模块,用于绝对值处理;异常判断模块,用于比较输入的信号与故障阈值的大小,由智能控制模块降低故障阈值的电压值;选通控制模块,用于控制信号的传输通路;异常检测模块,用于电能存储和电压异常判断。本发明充电桩的安全保护电路可在突变程度超过故障阈值时,进行断电保护,在未超过故障阈值时,将降低故障阈值,再次判断突变程度,可提前预测充电桩提供的交流电能是否异常,提高充电桩的供电安全性。


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    Title :

    Safety protection circuit of charging pile


    Additional title:

    一种充电桩的安全保护电路


    Contributors:
    LUO HUATAO (author) / LIU JIANGSHENG (author) / LIU JISHENG (author)

    Publication date :

    2025-03-04


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

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



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