The invention discloses a short circuit protection circuit and an alternating current charging pile, and belongs to the technical field of circuits. The alternating current input end of a full-bridge rectifier is connected with a live wire and a zero wire of the alternating current charging pile, and the direct current output end of the full-bridge rectifier is connected with the input end of a photoelectric coupler; the first output end of the photoelectric coupler is connected with the first end of a coil of a first relay, the second end of the coil of the first relay is connected with a first voltage end, and a normally open contact of the first relay is connected to the live wire and the zero wire; the second output end of the photoelectric coupler is connected with the first end of the switch, the second end of the switch is connected with a ground wire, and a control end of the switch is connected with a controller; and the first end of the first resistor is connected with the first end of the coil of the first relay, the second end of the first resistor is connected with the controller and the first end of a second resistor, and the second end of the second resistor is connected with the ground wire. Through the simple device composition, whether a short circuit occurs in the charging process or not can be detected, and circuit protection is carried out when the short circuit occurs.

    本申请公开了一种短路保护电路和交流充电桩,属于电路技术领域。全桥整流器的交流输入端与交流充电桩的火线和零线连接,全桥整流器的直流输出端与光电耦合器的输入端连接;光电耦合器的第一输出端与第一继电器的线圈的第一端连接,第一继电器的线圈的第二端与第一电压端连接,第一继电器的常开触点连接在火线和零线上;光电耦合器的第二输出端与开关的第一端连接,开关的第二端与地线连接,开关的控制端与控制器连接;第一电阻的第一端与第一继电器的线圈的第一端连接,第一电阻的第二端与控制器和第二电阻的第一端连接,第二电阻的第二端与地线连接。本申请通过简单的器件组成,可以在充电过程中检测是否短路,在短路时进行电路保护。


    Access

    Download


    Export, share and cite



    Title :

    Short circuit protection circuit and alternating current charging pile


    Additional title:

    短路保护电路和交流充电桩


    Contributors:
    CHEN RUI (author) / XU QINGSONG (author) / ZHU FU (author) / ZU LIANXING (author) / PI ZHIWU (author) / CHEN JIANXI (author)

    Publication date :

    2022-01-18


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    H02H EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS , Schutzschaltungsanordnungen / 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



    Overvoltage protection circuit and alternating current charging pile

    HUANG LIMING / HE QINGGANG / SONG ZHICHAO | European Patent Office | 2024

    Free access

    Short-circuit protection circuit for alternating-current pile of electric vehicle

    CAO YUANYUAN / CUI WENJUAN / WANG JIAN | European Patent Office | 2024

    Free access


    Relay adhesion detection circuit and alternating current charging pile

    NIU QILEI | European Patent Office | 2024

    Free access

    Charging pile charging protection circuit

    WANG MIN / JIN CHAOKUN / WEN ZHU | European Patent Office | 2020

    Free access