The invention discloses a conversion circuit and a control method thereof, a controller, a vehicle-mounted power supply system and a vehicle. The conversion circuit comprises a transformer which comprises a primary winding, a high-voltage secondary winding and a low-voltage secondary winding, and the low-voltage secondary winding is provided with a center tap; the primary side conversion circuit is connected to the primary side winding; the high-voltage conversion circuit is connected to the high-voltage secondary winding; the low-voltage conversion circuit is connected to the low-voltage secondary winding, the low-voltage conversion circuit comprises a grounding module, the grounding module is connected between the center tap and the grounding end of the low-voltage conversion circuit, and the grounding module is used for conducting the center tap and the grounding end of the low-voltage conversion circuit when the low-voltage conversion circuit is in a non-working state. According to the conversion circuit provided by the embodiment of the invention, the voltage floating of the low-voltage secondary winding relative to the ground can be eliminated when the low-voltage conversion circuit does not work, the rising of the device voltage stress of the low-voltage conversion circuit is avoided, and the service life of the low-voltage conversion circuit is prolonged.

    本申请公开一种变换电路及其控制方法、控制器、车载电源系统、车辆。变换电路包括:变压器,包括原边绕组、高压副边绕组、低压副边绕组,低压副边绕组具有中心抽头;原边转换电路,连接于原边绕组;高压转换电路,连接于高压副边绕组;低压转换电路,连接于低压副边绕组,其中,低压转换电路包括接地模块,接地模块连接于中心抽头与低压转换电路的接地端之间,接地模块用于在低压转换电路处于不工作状态下将中心抽头与低压转换电路的接地端导通。根据本申请实施例提供的变换电路,能够在低压转换电路不工作时消除低压副边绕组相对于地的电压浮动,避免低压转换电路的器件电压应力的抬高,提高低压转换电路的使用寿命。


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    Title :

    Conversion circuit and control method thereof, controller, vehicle-mounted power supply system and vehicle


    Additional title:

    变换电路及其控制方法、控制器、车载电源系统、车辆


    Contributors:
    GAO LONG (author) / ZHANG CHUANCHANG (author) / ZHANG ZHEN (author) / WANG FU (author)

    Publication date :

    2025-05-09


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



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