A hardware together with a software are used to implement a control pilot (CP) status detection for protecting a DC charging pile when errors happens, such as short circuit or open circuit, at CP point. The circuit for detecting the abnormality of the CP point includes a detection circuit, which is coupled to a CP signal generating circuit of the charging pile to provide an abnormal state detection when an electrical vehicle is electrically connected to the DC charging pile, and output the detected CP signal to a control circuit. It includes a DC voltage converter that converts a DC input voltage into two DC output reference voltage levels, a rectifier circuit to filter out the negative potential of the CP signal generating by the CP signal generating circuit, and a CP signal isolation circuit, connected to the rectifier circuit to provide isolated CP signals to the control circuit.


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    Title :

    Circuit and method for detecting control pilot abnormality of a DC charging pile


    Contributors:

    Publication date :

    2022-02-22


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    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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