The invention discloses a PTC (Positive Temperature Coefficient) undervoltage protection control method, device and equipment and a storage medium, and the method comprises the steps: obtaining the current input end voltage of a nonlinear thermistor PTC when charging equipment executes a charging preheating function; inputting the current input end voltage into a preset duty ratio limit value mapping graph to obtain a target duty ratio limit value; and controlling the output of the charging equipment according to the current input end voltage and the target duty ratio limit value, so that over-low output voltage of the charging equipment caused by over-large output current of a nonlinear thermistor PTC can be avoided, PTC under-voltage protection is performed on the charging equipment, an under-voltage fault is eliminated, charging failure of the charging equipment is avoided, and the service life of the charging equipment is prolonged. The stability and efficiency of new energy automobile charging preheating are improved, and the user experience is improved.

    本发明公开了一种PTC欠压保护控制方法、装置、设备及存储介质,所述方法通过在充电设备执行充电预加热功能时,获得非线性热敏电阻PTC的当前输入端电压;将所述当前输入端电压输入至预设占空比限值映射图,获得目标占空比限值;根据所述当前输入端电压和所述目标占空比限值控制所述充电设备的输出,能够避免非线性热敏电阻PTC输出电流过大造成充电设备输出电压过低,对充电设备进行PTC欠压保护,消除了欠压故障,避免了充电设备充电失败,提高了新能源汽车充电预加热的稳定性和效率,提升了用户体验。


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    Title :

    PTC (Positive Temperature Coefficient) undervoltage protection control method, device and equipment and storage medium


    Additional title:

    PTC欠压保护控制方法、装置、设备及存储介质


    Contributors:

    Publication date :

    2022-03-18


    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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