The invention discloses a single-stage vehicle-mounted charger without an electrolytic capacitor and a vehicle, and the vehicle-mounted charger comprises a rectification circuit which is connected with an AC power supply and is used for converting a first AC provided by the AC power supply into a first DC; the DCDC conversion circuit comprises a primary side switching circuit, a voltage conversion circuit and a secondary side switching circuit, the primary side switching circuit is respectively connected with the rectifying circuit and the primary side of the voltage conversion circuit, and the secondary side switching circuit is respectively connected with the secondary side of the voltage conversion circuit and the power battery; and the DCDC conversion circuit is used for converting the first direct current into second direct current to charge the power battery and carry out power factor correction. According to the vehicle-mounted charger, a two-stage topology is reduced to a single-stage topology, a PFC inductor and a PFC bus electrolytic capacitor are removed, a power factor correction function is combined to the DCDC conversion circuit to be realized, the size can be reduced, the cost can be reduced, and meanwhile, the efficiency can be improved.

    本发明公开了一种无电解电容单级车载充电机和车辆,所述车载充电机包括:整流电路,整流电路与交流电源相连,整流电路用于将交流电源提供的第一交流电变换为第一直流电;DCDC变换电路,DCDC变换电路包括原边开关电路、电压变换电路和副边开关电路,原边开关电路分别与整流电路和电压变换电路的原边相连,副边开关电路分别与电压变换电路的副边和动力电池相连,DCDC变换电路用于将第一直流电变换为第二直流电给动力电池充电并进行功率因数校正。本发明的车载充电机从两级拓扑缩减为单级拓扑,去除PFC电感和PFC母线电解电容,功率因数校正功能合并到DCDC转换电路实现,能够减小体积,降低成本,同时能提高效率。


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    Title :

    Electrolytic-capacitor-free single-stage vehicle-mounted charger and vehicle


    Additional title:

    无电解电容单级车载充电机和车辆


    Contributors:
    KANG WENBO (author) / SUN XIAOWEN (author) / LIU JIE (author)

    Publication date :

    2024-11-29


    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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