The invention provides a vehicle-mounted power supply device, a power assembly and a vehicle. A direct current conversion circuit of the vehicle-mounted power supply device comprises a primary side capacitor, a primary side power circuit, a transformer and a secondary side circuit and is used for receiving an external power supply to charge a vehicle-mounted low-voltage storage battery. Wherein the secondary side circuit comprises a positive connecting end, a negative connecting end, an inductor, two rectification switch tubes, two clamping switch tubes and a clamping capacitor, and is used for receiving power supplied by a vehicle-mounted low-voltage storage battery and carrying out reverse pre-charging on the primary side capacitor. And the positive and negative connecting ends are correspondingly connected with the positive and negative electrodes of the vehicle-mounted low-voltage storage battery respectively. A secondary winding of the transformer comprises a center tap and two ends, the center tap is connected with a positive connecting end through an inductor, the two ends of the center tap are connected with a negative connecting end through two rectification switch tubes respectively, the two ends of the center tap are further connected with one end of a clamping capacitor through two clamping switch tubes respectively, and the other end of the clamping capacitor is connected with the negative connecting end. The problem of voltage and current stress of the secondary circuit inductor is solved, and the circuit is simple.

    本申请提供一种车载供电装置、动力总成及车辆。车载供电装置的直流变换电路包括原边电容、原边功率电路、变压器和副边电路,用于接收外部电源为车载低压蓄电池充电。其中副边电路包括正和负连接端、一个电感、两个整流开关管、两个钳位开关管和一个钳位电容,用于接收车载低压蓄电池的供电并对原边电容进行反向预充电。其正、负连接端分别对应连接车载低压蓄电池的正、负极。其变压器的副边绕组包括一个中心抽头和两端,中心抽头通过电感连接正连接端,两端分别通过两个整流开关管连接负连接端,两端还分别通过两个钳位开关管连接钳位电容的一端,该钳位电容的另一端连接负连接端。本申请解决副边电路电感的电压和电流应力问题,电路简单。


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    Title :

    Vehicle-mounted power supply device, power assembly and vehicle


    Additional title:

    一种车载供电装置、动力总成及车辆


    Contributors:
    YU WENHAI (author) / YE TIANLUN (author) / LIU REN (author)

    Publication date :

    2024-07-12


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    H02H EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS , Schutzschaltungsanordnungen / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / H02J CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER , Schaltungsanordnungen oder Systeme für die Abgabe oder Verteilung elektrischer Leistung



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