The invention relates to the field of electric vehicles, and provides an electric vehicle power supply device and method and an electric vehicle, and the device comprises a first switch device, a second switch device, and a low-voltage storage battery, a control unit and a DCDC converter which are integrated in the same box body; the first switch device and the DCDC converter are arranged in a first power supply loop of the low-voltage storage battery, and the second switch device and the control unit are arranged in a second power supply loop of the low-voltage storage battery; the control unit is used for controlling the first switching device to be closed when the second power supply loop is switched on and the low-voltage storage battery meets the power supply condition; the controller is also used for detecting working parameter data of the low-voltage storage battery and controlling on and off of the DCDC converter based on the working parameter data; and the DCDC converter is used for converting the output voltage of the power battery into the charging voltage of the low-voltage storage battery when being started. The charging reliability of the low-voltage storage battery can be guaranteed, and the cost of the electric vehicle is greatly reduced.

    本发明涉及电动车辆领域,提供一种电动车辆供电装置、方法及电动车辆,该装置包括:第一开关装置、第二开关装置以及集成于同一箱体的低压蓄电池、控制单元和DCDC变换器;第一开关装置和DCDC变换器设置在低压蓄电池的第一供电回路中,第二开关装置和控制单元设置在低压蓄电池的第二供电回路中;控制单元用于在第二供电回路导通且确定低压蓄电池满足供电条件时,控制第一开关装置闭合;还用于检测低压蓄电池的工作参数数据,基于工作参数数据控制DCDC变换器的开启和关闭;DCDC变换器开启时用于将动力电池的输出电压转换为低压蓄电池的充电电压。本发明能够保证低压蓄电池充电的可靠性,且极大降低了电动车辆的成本。


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    Title :

    Electric vehicle power supply device and method and electric vehicle


    Additional title:

    电动车辆供电装置、方法及电动车辆


    Contributors:
    WANG RUI (author) / WANG XIMING (author) / ZHANG JINGFEI (author)

    Publication date :

    2023-05-23


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR / 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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