The invention relates to the technical field of new energy automobiles, and provides a charging protection circuit of a new energy automobile and the new energy automobile, the charging protection circuit comprises a rectifier, a charging protection chip, a switch transformer, a power tube, a rectification filter circuit, a detection adjusting circuit and a charging plug, the switch transformer comprises a primary coil and three secondary coils, the first secondary coil is connected with the charging plug through the rectifying and filtering circuit, the detecting and adjusting circuit comprises a voltage sampling circuit, a voltage stabilizing and amplifying device and a photoelectric coupler, the second secondary coil is connected with the charging protection chip and the photoelectric coupler, and the voltage sampling circuit is electrically connected with the rectifying and filtering circuit and the third secondary coil. The voltage stabilizing and amplifying device and the photoelectric coupler are respectively connected with the voltage sampling circuit, and the charging protection chip is respectively and electrically connected with the photoelectric coupler and the power tube; according to the invention, voltage stabilization control can be carried out on the output voltage of the charging protection circuit when the commercial power voltage changes drastically, so that the charging efficiency of the power battery is improved.

    本发明涉及新能源汽车技术领域,并提供一种新能源汽车的充电保护电路及新能源汽车,包括整流器、充电保护芯片、开关变压器、功率管、整流滤波电路、检测调节电路和充电插头,所述开关变压器包括初级线圈和三个次级线圈,第一次级线圈通过整流滤波电路与充电插头连接,检测调节电路包括电压取样电路、稳压放大器件和光电耦合器,所述第二次级线圈分别与充电保护芯片和光电耦合器连接,电压取样电路分别与整流滤波电路和第三次级线圈电连接,稳压放大器件和光电耦合器分别与电压取样电路连接,充电保护芯片分别与光电耦合器和所述功率管电连接;本发明可以在市电电压剧变时,对充电保护电路的输出电压进行稳压控制,以提高对动力电池的充电效率。


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    Title :

    Charging protection circuit of new energy automobile and new energy automobile


    Additional title:

    一种新能源汽车的充电保护电路及新能源汽车


    Contributors:
    WANG YUEFENG (author) / HUO XIAOBO (author) / ZHANG QIANG (author)

    Publication date :

    2023-01-10


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    H02M APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS , Anlagen zur Umformung von Wechselstrom in Wechselstrom, von Wechselstrom in Gleichstrom oder umgekehrt, oder von Gleichstrom in Gleichstrom und zur Verwendung in Netzen oder ähnlichen Stromversorgungssystemen / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen



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