The invention belongs to the technical field of chargers, and discloses a charger protection circuit and method and a charger. The charger protection circuit comprises an over-temperature protection circuit, a charging control circuit, a short-circuit protection circuit and an overvoltage protection circuit. The over-temperature protection circuit is used for outputting a working signal to the charging control circuit when the temperature of the charger is smaller than a temperature threshold value; the charging control circuit is used for converting voltage provided by the mains supply into charging voltage according to the working signal and outputting the charging voltage so as to charge a battery pack; the short-circuit protection circuit is used for consuming the charging voltage when the two ends of the battery pack are short-circuited so as to reduce the short-circuit current; and the overvoltage protection circuit is used for outputting the charging voltage to the ground when the voltage at the two ends of the battery pack exceeds a voltage threshold so as to stop charging the battery pack. According to the invention, the circuit of the charger is improved, a protection circuit is designed for common abnormity of over-temperature, over-voltage and output short circuit, charging is stopped in time, and the use safety of the charger is guaranteed.

    本发明属于充电机技术领域,公开了一种充电机保护电路、方法及充电机。所述充电机保护电路包括过温保护电路、充电控制电路、短路保护电路及过压保护电路;过温保护电路,用于在充电机温度小于温度阈值时,输出工作信号至充电控制电路;充电控制电路,用于根据工作信号,将市电提供的电压转换为充电电压并输出,从而对电池组进行充电;短路保护电路,用于在电池组两端出现短路时,消耗充电电压,从而降低短路电流;过压保护电路,用于在电池组两端的电压超过电压阈值时将充电电压输出至地,从而停止对电池组充电。本发明通过对充电机电路进行改进,针对过温、过压及输出短路的常见异常设计保护电路,及时停止充电,保障了充电机的使用安全。


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    Titel :

    Charger protection circuit and method and charger


    Weitere Titelangaben:

    充电机保护电路、方法及充电机


    Beteiligte:
    LI WEI (Autor:in) / LIN MUSONG (Autor:in)

    Erscheinungsdatum :

    2022-02-15


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Chinesisch


    Klassifikation :

    IPC:    B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen



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