The invention provides a vehicle-mounted power supply device for reducing reverse pre-charging resonance current, a driving assembly and a vehicle. The vehicle-mounted power supply device comprises a primary side capacitor and a direct current conversion circuit, and the direct current conversion circuit comprises a secondary side power circuit, a transformer, an ORI NG switch tube, a secondary side filter inductor and a secondary side filter capacitor. The secondary side power circuit is connected with the positive electrode of the vehicle-mounted low-voltage storage battery through a secondary side filter inductor and an ORI NG switch tube. One end of the secondary filter capacitor is used for being connected with the positive electrode of the vehicle-mounted low-voltage storage battery through the ORI NG switch tube, and the other end of the secondary filter capacitor is used for being connected with the negative electrode of the vehicle-mounted low-voltage storage battery. According to the vehicle-mounted power supply device provided by the invention, through the LC resonance circuit formed by the secondary filter capacitor and the secondary filter inductor, resonance current can be reduced, the reverse pre-charging power of the primary capacitor is improved, and meanwhile, the cost is reduced.
本申请提供一种减小反向预充电谐振电流的车载供电装置、驱动总成及车辆。车载供电装置包括原边电容和直流变换电路,直流变换电路包括副边功率电路、变压器和ORI NG开关管、副边滤波电感和副边滤波电容。副边功率电路通过副边滤波电感、ORI NG开关管连接车载低压蓄电池的正极。副边滤波电容的一端用于通过ORI NG开关管连接车载低压蓄电池的正极,副边滤波电容的另一端用于连接车载低压蓄电池的负极。本申请提供的车载供电装置通过副边滤波电容与副边滤波电感构成的LC谐振电路可以减少谐振电流,提高原边电容的反向预充电功率,同时降低了成本。
Vehicle-mounted power supply device capable of reducing reverse pre-charging resonance current, power assembly and vehicle
减小反向预充谐振电流的车载供电装置、动力总成及车辆
2024-05-14
Patent
Elektronische Ressource
Chinesisch
Europäisches Patentamt | 2024
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