The invention provides an electric automobile air conditioner heater control circuit which is used for a PTC heating circuit and comprises a control chip, a power switch tube and an amplifying circuit. The power switch tube is connected with the amplifying circuit; a first resistor, a second resistor, a third resistor, a first capacitor and a first diode are arranged between the control chip and the power switch tube. The control chip controls to provide a switching signal of a pulse modulation method for the power switch tube IGBT, the magnitude of output power is adjusted through on-off of the power switch tube IGBT, and the amplifying circuit is connected with a current sensor to monitor the current of the PTC heating core body in real time and feed back the current to the central processing unit. According to the technical scheme, electromagnetic interference noise generated in the working process of the PTC heater can be reduced, the electromagnetic compatibility of the PTC heater is improved, and normal operation of all parts in the electric automobile is guaranteed.

    本发明提供了一种电动汽车空调加热器控制电路,用于PTC加热电路,包括控制芯片、功率开关管以及放大电路;所述功率开关管连接所述放大电路;所述控制芯片与功率开关管之间还包括第一电阻、第二电阻、第三电阻、第一电容以及第一二极管;所述控制芯片控制为所述功率开关管IGBT提供脉冲调制法的开关信号,通过功率开关管IGBT的通断调节输出功率的大小,所述放大电路连接电流传感器,将PTC加热芯体的电流实时监测反馈给中央处理器。应用本技术方案可降低PTC加热器工作中产生的电磁干扰噪声,提高其电磁兼容性,保证电动汽车内各零部件的正常运行。


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    Title :

    Control circuit for air conditioner heater of electric automobile


    Additional title:

    一种电动汽车空调加热器控制电路


    Contributors:
    ZHA YUNFEI (author) / HUANG CAIYUAN (author)

    Publication date :

    2024-08-09


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B60H ARRANGEMENTS OR ADAPTATIONS OF HEATING, COOLING, VENTILATING, OR OTHER AIR-TREATING DEVICES SPECIALLY FOR PASSENGER OR GOODS SPACES OF VEHICLES , Anordnung oder Einbau der Heizung, Kühlung, Lüftung oder anderer Luftbehandlungsvorrichtungen für die Fahrzeugräume für Reisende oder Fracht



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