The invention provides an electric vehicle range extending system and method, which relate to the technical field of electric vehicle charging. The system comprises a battery changing battery bin, a switch assembly, a direct-current output assembly, a controller and an electric automobile battery pack, wherein the power supply output end of the electric automobile battery pack is electrically connected with a direct-current bus of an electric automobile, and the sampling end of the electric automobile battery pack is electrically connected with the controller; a battery changing battery placed in the battery changing battery bin is electrically connected with one end of the switch assembly, and the output end of the controller is electrically connected with the control end of the switch assembly; the other end of the switch assembly is further electrically connected with the input end of the direct-current output assembly, and the output end of the direct-current output assembly is further electrically connected with the direct-current bus. The controller controls the switch assembly to be in a closed state according to the electric quantity information of the battery pack of the electric vehicle, the direct-current output assembly converts electric energy in the battery and outputs the converted electric energy to the direct-current bus, electric energy is directly provided for the electric vehicle, loss of the battery pack of the electric vehicle is reduced, and conversion efficiency is improved.

    本发明提供一种电动汽车增程系统及方法,涉及电动汽车充电技术领域。包括:换电电池仓、开关组件、直流输出组件、控制器及电动汽车电池组,其中,电动汽车电池组的供电输出端电连接电动汽车的直流母线,电动汽车电池组的采样端电连接控制器;换电电池仓中放置的换电电池电连接开关组件的一端,控制器的输出端电连接开关组件的控制端;开关组件的另一端还电连接直流输出组件的输入端,直流输出组件的输出端还电连接直流母线。控制器根据电动汽车电池组的电量信息控制开关组件处于闭合状态,直流输出组件对换电电池中的电能进行转换后输出至直流母线,直接为电动汽车提供电能,减少了电动汽车电池组的损耗,提高了转换效率。


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    Title :

    Electric vehicle range extending system and method


    Additional title:

    电动汽车增程系统及方法


    Contributors:
    WANG LI (author) / LI JIANQI (author)

    Publication date :

    2021-07-23


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen



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