The invention discloses a vehicle-mounted power supply device and an electric vehicle, relates to the field of new energy automobiles, and can be applied to pure electric vehicles and hybrid vehicles. The vehicle-mounted power supply device is used for converting two paths of high-voltage direct current output by two battery units of a power battery into low-voltage direct current to supply power to a load of an electric vehicle, and comprises two low-voltage power conversion circuits, wherein one low-voltage power conversion circuit is used for receiving one path of high-voltage direct current output by one battery unit and outputting one path of low-voltage direct current, and the voltage of one path of high-voltage direct current is larger than that of one path of low-voltage direct current; and the other low-voltage power conversion circuit is used for receiving the other path of high-voltage direct current output by the other battery unit and outputting the other path of low-voltage direct current, and the voltage of the other path of high-voltage direct current is greater than that of the other path of low-voltage direct current. According to the scheme, the voltage change range corresponding to each conversion circuit can be reduced, double-circuit power supply is achieved, and the power supply requirement of automatic driving LEVEL 3 and above is met.

    一种车载供电装置和电动车辆,涉及新能源汽车领域,可应用于纯电动车辆及混动车辆。该车载供电装置用于将动力电池的两个电池单元分别输出的两路高压直流电转换为低压直流电为电动车辆的负载供电,包括两个低压功率变换电路,其中一个低压功率变换电路用于接收一个电池单元输出的一路高压直流电并输出一路低压直流电,一路高压直流电的电压大于一路低压直流电的电压;另一个低压功率变换电路用于接收另一个电池单元输出的另一路高压直流电并输出另一路低压直流电,另一路高压直流电的电压大于另一路低压直流电的电压。根据本申请的方案,可以减小每路变换电路对应的电压变化范围,具备双路供电,满足自动驾驶LEVEL 3及以上的供电要求。


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    Title :

    Vehicle-mounted power supply device and electric vehicle


    Additional title:

    一种车载供电装置和电动车辆


    Contributors:
    LI PING (author) / CUI ZHAOXUE (author) / LIANG TAO (author)

    Publication date :

    2024-05-10


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

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



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