The invention discloses a heating circuit of a battery pack, a power supply system and an electric vehicle. The heating circuit comprises a battery pack, a first switch, a second switch, a first diode, a second diode, an inductor and a capacitor, wherein the first end of the first switch is connected with the anode of the battery pack; the first end of the second switch is connected with the second end of the first switch, and the second end is connected with the cathode of the battery pack; the cathode of the first diode is connected with the anode of the battery pack, and the anode is connected with the second end of the first switch; the anode of the second diode is connected with the cathode of the battery pack, and the cathode is connected with the second end of the first switch; thefirst end of the inductor is connected with the second end of the first switch; the first end of the capacitor is connected with the second end of the inductor, and the second end is connected with the cathode of the battery pack. According to the heating circuit, charging and discharging currents during charging and discharging of the battery pack can be utilized to flow through the internal resistance of the battery to generate heat to directly heat the battery cell, the heating efficiency is high, the space volume is not occupied, complex control circuits and execution elements are not needed, the integration degree is high, and the cost is low.

    本发明公开了一种电池包的加热电路、电源系统和电动车辆,所述加热电路包括:电池包;第一开关,第一端与电池包的正极连接;第二开关,第一端与第一开关的第二端连接,第二端与电池包的负极连接;第一二极管,阴极与电池包的正极连接,阳极与第一开关的第二端连接;第二二极管,阳极与电池包的负极连接,阴极与第一开关的第二端连接;电感,第一端与第一开关的第二端连接;电容,第一端与电感的第二端连接,第二端与电池包的负极连接。该加热电路可以利用电池包本身充、放电时的充、放电流流经电池内阻产生热量实现对电池电芯的直接加热,加热效率高,且不占用空间体积,不需要复杂的控制电路和执行元件,集成化程度高、成本低。


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    Titel :

    Heating circuit of battery pack, power supply system and electric vehicle


    Weitere Titelangaben:

    电池包的加热电路、电源系统和电动车辆


    Beteiligte:
    LIU MINGYUAN (Autor:in) / YAN GUANGBO (Autor:in) / ZHANG JIANBIAO (Autor:in) / GAO PANLONG (Autor:in)

    Erscheinungsdatum :

    17.07.2020


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Chinesisch


    Klassifikation :

    IPC:    B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen



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